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I don't think google for domain syncs contacts. You have to sync google contacts with itunes first, and then plug in your iphone. Not too convenient because the only time I plug in my iphone to my computer is to do software updates.

You're mistaken. You can sync contacts via Exchange with Google Apps.
 
Nothing beat drop box for file storage. Have used it on both our iPhones and Blackberrys and it has worked without flaw!
 
I signed up for a 60 day trial of MobileMe yesterday. I wanted to give it a go and see if it's something I will use. I have a Mac Mini, PC and iPhone 4. I like how the interface is clean, simple and built into my Mac. I also like the ease of use so far. I am going to give iDisk a run as well.
 
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