If you are looking for an application to synchronize your Google contacts with Outlook 2010, then GO Contact Sync should be the perfect choice. GO Contact Sync (Google Outlook Contact Sync) is a freeware tool which provides options to synchronize Google and Outlook contacts. The application is very simple to use, all you need is to enter the Google email ID and password and select the sync option and also specify a profile name.
The application provides 5 different options for sync, Merge Prompt, Merge Outlook Wins, Merge Google Wins, Outlook to Google and Google to Outlook. If you select merge prompt, then the tool will ask to you to chose the option in case of a conflict.
Google Outlook Sync is a very useful tool to merge or sync your Google contacts with Outlook. This tool works fine with Outlook 2010 as well.