[intlect]

I've tried Spanning Sync but I wasn't comfortable with giving access to my Gmail password so I gave up on it really soon.

I've also tried soocial.com which I liked because it uses OAuth and I can always just revoke its access, but it sucked when it came to Prefixes and Suffixes. I have people in my address book who happen to be Jr. and Sr. or who happen to have the same name and one had no email and it mashed them up.

NuevaSync seems more focused on the mobile aspects of things and I'm really just interested in contact syncing with as few parties in between as possible. (paranoid)