I'm struggling to come up with a rational scheme for managing sync between my mac laptop, my iphone, and google. My corporate center is google apps, so I need to start with contacts from there. However, somehow, I constantly end up with some sync process creating extra copies of my contacts.
I do not have any contact syncing enabled in itunes.
One possible source of distress is that I have two different google accounts: personal and business. The personal account is set to sync contacts via an 'Account' of type 'Exchange', the work ones come in via a card-dav account (I think, the phone doesn't actually tell you what these things are once they exist).