diff --git a/.travis.yml b/.travis.yml
index 7c327439..b80c98ce 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,6 @@ cache:
 notifications:
   email: false
 node_js:
-  - 0.12
   - 4
   - 6
 matrix:
diff --git a/Dockerfile b/Dockerfile
index 5b07acd6..a90bda50 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:0.12
+FROM node:4.6.0
 MAINTAINER Pelias
 
 EXPOSE 3100
diff --git a/README.md b/README.md
index a28ceb52..2f6e6627 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@ See the [Mapzen Search documentation](https://mapzen.com/documentation/search/).
 
 ## Install Dependencies
 
+Note: Pelias requires Node.js v4 or newer
+
 ```bash
 npm install
 ```
diff --git a/index.js b/index.js
index 42116f53..e5404586 100644
--- a/index.js
+++ b/index.js
@@ -1,33 +1,7 @@
 
-var cluster = require('cluster'),
-    app = require('./app'),
-    port = ( process.env.PORT || 3100 ),
-    // when pelias/api#601 is done this can be changed to `true`
-    multicore = false;
-
-/** cluster webserver across all cores **/
-if( multicore ){
-
-  var numCPUs = require('os').cpus().length;
-  if( cluster.isMaster ){
-
-    // fork workers
-    for (var i = 0; i < numCPUs; i++) {
-      cluster.fork();
-    }
-
-    cluster.on('exit', function( worker, code, signal ){
-      console.log('worker ' + worker.process.pid + ' died');
-    });
-
-  } else {
-    app.listen( port );
-    console.log( 'worker: listening on ' + port );
-  }
-}
+var app = require('./app'),
+    port = ( process.env.PORT || 3100 );
 
 /** run server on the default setup (single core) **/
-else {
-  console.log( 'listening on ' + port );
-  app.listen( port );
-}
+console.log( 'listening on ' + port );
+app.listen( port );
diff --git a/middleware/dedupe.js b/middleware/dedupe.js
index b40f1806..3b125d0d 100644
--- a/middleware/dedupe.js
+++ b/middleware/dedupe.js
@@ -16,11 +16,41 @@ function dedupeResults(req, res, next) {
   var uniqueResults = [];
 
   _.some(res.data, function (hit) {
-    if (uniqueResults.length === 0 || _.every(uniqueResults, isDifferent.bind(null, hit)) ) {
+
+    if (_.isEmpty(uniqueResults)) {
       uniqueResults.push(hit);
     }
     else {
-      logger.info('[dupe]', { query: req.clean.text, hit: hit.name.default + ' ' + hit.source + ':' + hit._id });
+      // if there are multiple items in results, loop through them to find a dupe
+      // save off the index of the dupe if found
+      var dupeIndex = uniqueResults.findIndex(function (elem, index, array) {
+        return !isDifferent(elem, hit);
+      });
+
+      // if a dupe is not found, just add to results and move on
+      if (dupeIndex === -1) {
+        uniqueResults.push(hit);
+      }
+      // if dupe was found, we need to check which of the records is preferred
+      // since the order in which Elasticsearch returns identical text matches is arbitrary
+      // of course, if the new one is preferred we should replace previous with new
+      else if (isPreferred(uniqueResults[dupeIndex], hit)) {
+        logger.info('[dupe][replacing]', {
+          query: req.clean.text,
+          previous: uniqueResults[dupeIndex].source,
+          hit: hit.name.default + ' ' + hit.source + ':' + hit._id
+        });
+        // replace previous dupe item with current hit
+        uniqueResults[dupeIndex] = hit;
+      }
+      // if not preferred over existing, just log and move on
+      else {
+        logger.info('[dupe][skipping]', {
+          query: req.clean.text,
+          previous: uniqueResults[dupeIndex].source,
+          hit: hit.name.default + ' ' + hit.source + ':' + hit._id
+        });
+      }
     }
 
     // stop looping when requested size has been reached in uniqueResults
@@ -32,4 +62,19 @@ function dedupeResults(req, res, next) {
   next();
 }
 
+function isPreferred(existing, candidateReplacement) {
+  // NOTE: we are assuming here that the layer for both records is the same
+
+  //bind the trumps function to the data items to keep the rest of the function clean
+  var trumpsFunc = trumps.bind(null, existing, candidateReplacement);
+
+  return trumpsFunc('geonames', 'whosonfirst') || // WOF has bbox and is generally preferred
+         trumpsFunc('openstreetmap', 'openaddresses') || // addresses are better in OA
+         trumpsFunc('whosonfirst', 'openstreetmap'); // venues are better in OSM, at this time
+}
+
+function trumps(existing, candidateReplacement, loserSource, winnerSource) {
+  return existing.source === loserSource && candidateReplacement.source === winnerSource;
+}
+
 module.exports = setup;
diff --git a/middleware/geocodeJSON.js b/middleware/geocodeJSON.js
index 3b5170dd..442e017e 100644
--- a/middleware/geocodeJSON.js
+++ b/middleware/geocodeJSON.js
@@ -43,7 +43,7 @@ function convertToGeocodeJSON(req, res, next, opts) {
 
   // REQUIRED. A semver.org compliant version number. Describes the version of
   // the GeocodeJSON spec that is implemented by this instance.
-  res.body.geocoding.version = '0.1';
+  res.body.geocoding.version = '0.2';
 
   // OPTIONAL. Default: null. The attribution of the data. In case of multiple sources,
   // and then multiple attributions, can be an object with one key by source.
diff --git a/package.json b/package.json
index 8d1025c9..0443f632 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "url": "https://github.com/pelias/api/issues"
   },
   "engines": {
-    "node": ">=0.10.26"
+    "node": ">=4.0.0"
   },
   "dependencies": {
     "addressit": "1.4.0",
@@ -41,7 +41,7 @@
     "elasticsearch": "^11.0.0",
     "elasticsearch-exceptions": "0.0.4",
     "express": "^4.8.8",
-    "express-http-proxy": "^0.7.0",
+    "express-http-proxy": "^0.10.0",
     "extend": "3.0.0",
     "geojson": "^0.4.0",
     "geojson-extent": "^0.3.1",
@@ -51,12 +51,12 @@
     "lodash": "^4.5.0",
     "markdown": "0.5.0",
     "morgan": "1.7.0",
-    "pelias-categories": "1.0.0",
-    "pelias-config": "2.1.0",
-    "pelias-logger": "0.0.8",
-    "pelias-model": "4.2.0",
-    "pelias-query": "8.6.0",
-    "pelias-text-analyzer": "1.3.0",
+    "pelias-categories": "1.1.0",
+    "pelias-config": "2.3.0",
+    "pelias-logger": "0.1.0",
+    "pelias-model": "4.3.0",
+    "pelias-query": "8.8.0",
+    "pelias-text-analyzer": "1.4.0",
     "stats-lite": "2.0.3",
     "through2": "2.0.1"
   },
diff --git a/query/search.js b/query/search.js
index 29dea8b9..bed5a63c 100644
--- a/query/search.js
+++ b/query/search.js
@@ -59,7 +59,7 @@ function generateQuery( clean ){
 
   // size
   if( clean.querySize ) {
-    vs.var( 'size', 50 );
+    vs.var( 'size', clean.querySize );
   }
 
   // focus point
diff --git a/query/search_defaults.js b/query/search_defaults.js
index 4e6a7ffb..c0d2a6a0 100644
--- a/query/search_defaults.js
+++ b/query/search_defaults.js
@@ -92,6 +92,9 @@ module.exports = _.merge({}, peliasQuery.defaults, {
   'population:field': 'population',
   'population:modifier': 'log1p',
   'population:max_boost': 20,
-  'population:weight': 2
+  'population:weight': 2,
+
+  'boost:address': 10,
+  'boost:street': 5
 
 });
diff --git a/test/unit/fixture/search_boundary_country.js b/test/unit/fixture/search_boundary_country.js
index f622e1f5..ee6427a0 100644
--- a/test/unit/fixture/search_boundary_country.js
+++ b/test/unit/fixture/search_boundary_country.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -73,19 +74,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_fallback.js b/test/unit/fixture/search_fallback.js
index f7983da9..857e47e9 100644
--- a/test/unit/fixture/search_fallback.js
+++ b/test/unit/fixture/search_fallback.js
@@ -98,6 +98,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.address',
+                    'boost': 10,
                     'must': [
                       {
                         'match_phrase': {
@@ -195,6 +196,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -790,16 +792,6 @@ module.exports = {
   'size': 20,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_bbox.js b/test/unit/fixture/search_linguistic_bbox.js
index 52c73c3c..e74f6c79 100644
--- a/test/unit/fixture/search_linguistic_bbox.js
+++ b/test/unit/fixture/search_linguistic_bbox.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -76,19 +77,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_focus.js b/test/unit/fixture/search_linguistic_focus.js
index 33c62c1e..a63400b3 100644
--- a/test/unit/fixture/search_linguistic_focus.js
+++ b/test/unit/fixture/search_linguistic_focus.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -79,19 +80,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_focus_bbox.js b/test/unit/fixture/search_linguistic_focus_bbox.js
index 717c27ac..7f6c8528 100644
--- a/test/unit/fixture/search_linguistic_focus_bbox.js
+++ b/test/unit/fixture/search_linguistic_focus_bbox.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -90,19 +91,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_focus_null_island.js b/test/unit/fixture/search_linguistic_focus_null_island.js
index 20f72ceb..da12154a 100644
--- a/test/unit/fixture/search_linguistic_focus_null_island.js
+++ b/test/unit/fixture/search_linguistic_focus_null_island.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -79,19 +80,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_only.js b/test/unit/fixture/search_linguistic_only.js
index 8c377f71..0117e03b 100644
--- a/test/unit/fixture/search_linguistic_only.js
+++ b/test/unit/fixture/search_linguistic_only.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -65,19 +66,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_viewport.js b/test/unit/fixture/search_linguistic_viewport.js
index 8c377f71..0117e03b 100644
--- a/test/unit/fixture/search_linguistic_viewport.js
+++ b/test/unit/fixture/search_linguistic_viewport.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -65,19 +66,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_linguistic_viewport_min_diagonal.js b/test/unit/fixture/search_linguistic_viewport_min_diagonal.js
index 8c377f71..0117e03b 100644
--- a/test/unit/fixture/search_linguistic_viewport_min_diagonal.js
+++ b/test/unit/fixture/search_linguistic_viewport_min_diagonal.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -65,19 +66,9 @@ module.exports = {
       'boost_mode': 'multiply'
     }
   },
-  'size': 50,
+  'size': 10,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_with_category_filtering.js b/test/unit/fixture/search_with_category_filtering.js
index 9913b19c..05f9ec4e 100644
--- a/test/unit/fixture/search_with_category_filtering.js
+++ b/test/unit/fixture/search_with_category_filtering.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -69,16 +70,6 @@ module.exports = {
   'size': 20,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/fixture/search_with_source_filtering.js b/test/unit/fixture/search_with_source_filtering.js
index 78889325..0e9010c2 100644
--- a/test/unit/fixture/search_with_source_filtering.js
+++ b/test/unit/fixture/search_with_source_filtering.js
@@ -9,6 +9,7 @@ module.exports = {
                 {
                   'bool': {
                     '_name': 'fallback.street',
+                    'boost': 5,
                     'must': [
                       {
                         'match_phrase': {
@@ -68,16 +69,6 @@ module.exports = {
   'size': 20,
   'track_scores': true,
   'sort': [
-    {
-      'population': {
-        'order': 'desc'
-      }
-    },
-    {
-      'popularity': {
-        'order': 'desc'
-      }
-    },
     '_score'
   ]
 };
diff --git a/test/unit/middleware/dedupe.js b/test/unit/middleware/dedupe.js
index b8100955..291d404a 100644
--- a/test/unit/middleware/dedupe.js
+++ b/test/unit/middleware/dedupe.js
@@ -58,6 +58,136 @@ module.exports.tests.dedupe = function(test, common) {
   });
 };
 
+module.exports.tests.trump = function(test, common) {
+  test('whosonfirst trumps geonames, replace', function (t) {
+    var req = {
+      clean: {
+        text: 'Lancaster',
+        size: 100
+      }
+    };
+    var res = {
+      data:  [
+        {
+          'name': { 'default': 'Lancaster' },
+          'source': 'geonames',
+          'source_id': '123456',
+          'layer': 'locality'
+        },
+        {
+          'name': { 'default': 'Lancaster' },
+          'source': 'whosonfirst',
+          'source_id': '654321',
+          'layer': 'locality'
+        }
+      ]
+    };
+
+    var expectedCount = 1;
+    dedupe(req, res, function () {
+      t.equal(res.data.length, expectedCount, 'results have fewer items than before');
+      t.deepEqual(res.data[0].source, 'whosonfirst', 'whosonfirst result won');
+      t.end();
+    });
+  });
+
+  test('whosonfirst trumps geonames, no replace', function (t) {
+    var req = {
+      clean: {
+        text: 'Lancaster',
+        size: 100
+      }
+    };
+    var res = {
+      data:  [
+        {
+          'name': { 'default': 'Lancaster' },
+          'source': 'whosonfirst',
+          'source_id': '123456',
+          'layer': 'locality'
+        },
+        {
+          'name': { 'default': 'Lancaster' },
+          'source': 'geonames',
+          'source_id': '654321',
+          'layer': 'locality'
+        }
+      ]
+    };
+
+    var expectedCount = 1;
+    dedupe(req, res, function () {
+      t.equal(res.data.length, expectedCount, 'results have fewer items than before');
+      t.deepEqual(res.data[0].source, 'whosonfirst', 'whosonfirst result won');
+      t.end();
+    });
+  });
+
+  test('openstreetmap trumps whosonfirst venues', function (t) {
+    var req = {
+      clean: {
+        text: 'Lancaster Dairy Farm',
+        size: 100
+      }
+    };
+    var res = {
+      data:  [
+        {
+          'name': { 'default': 'Lancaster Dairy Farm' },
+          'source': 'openstreetmap',
+          'source_id': '123456',
+          'layer': 'venue'
+        },
+        {
+          'name': { 'default': 'Lancaster Dairy Farm' },
+          'source': 'whosonfirst',
+          'source_id': '654321',
+          'layer': 'venue'
+        }
+      ]
+    };
+
+    var expectedCount = 1;
+    dedupe(req, res, function () {
+      t.equal(res.data.length, expectedCount, 'results have fewer items than before');
+      t.deepEqual(res.data[0].source, 'openstreetmap', 'openstreetmap result won');
+      t.end();
+    });
+  });
+
+  test('openaddresses trumps openstreetmap', function (t) {
+    var req = {
+      clean: {
+        text: '100 Main St',
+        size: 100
+      }
+    };
+    var res = {
+      data:  [
+        {
+          'name': { 'default': '100 Main St' },
+          'source': 'openstreetmap',
+          'source_id': '123456',
+          'layer': 'address'
+        },
+        {
+          'name': { 'default': '100 Main St' },
+          'source': 'openaddresses',
+          'source_id': '654321',
+          'layer': 'address'
+        }
+      ]
+    };
+
+    var expectedCount = 1;
+    dedupe(req, res, function () {
+      t.equal(res.data.length, expectedCount, 'results have fewer items than before');
+      t.deepEqual(res.data[0].source, 'openaddresses', 'openaddresses result won');
+      t.end();
+    });
+  });
+};
+
 module.exports.all = function (tape, common) {
 
   function test(name, testFunction) {