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It's really your choice. You're only putting $500-600 into the iPhone, other than if you're under contract, I don't see where the other $400 is coming from. Though as a Treo user sick of popping the back off as you mentioned, I had an iPhone from Day one and the Treo I use sometimes to play Bejewled or as a go between sync for my PC at work. Other than that, I hate to touch it. I'd say it's very much worth it.