I'm considering getting an iPhone for personal and business use. I was wondering if anyone has done a cost/benefit analysis of the phone or has seen any posts or articles of one? Right now I'm on Sprint with a blackberry, it's a phone and an expense, doesn't save me much money. I've had the opportunity to play with the iPhone of a friend and my iPod touch, I can see apps like "cheap gas", location based to-do lists, traffic alerts/navigation saving me money. The coupon app and barecode scanner app would also be fantastic. So has anyone found the iPhone to be saving them much money instead of being a money drain to at&t? Really appreciate your responses!