One thing about being tied to Apple vs Google for services like contacts, email and calendar is that they aren't mutually exclusive either. My iCal syncs with Google Calendar, my contacts sync with my address book and it's not like you can't use Gmail with just about any setup. The feature I do admit I drool over is how well the Android does Google Talk and how you SMS gets merged into the gmail logs. I think Meebo for the iPhone will improve chat substantially and BeeJive is already offering push based chat but the G1 definitly has the edge here.