I have the Iphone 4 and absolutely love it. The $15 per month data plan will be just fine if you are mostly interested in email, google voice, calendar, maps, sports scores, the occasional google search. That's what I use it for, and I always have tons of data left over at the end of the month. If you want to stream video and audio in your car, such as Pandora/Netflix, you will probably need the higher one. The nice thing with At&t is that they let you switch between the two levels without forcing you to redo your plan. So, if the $15 plan isn't enough, one can move up to the $30. Or if the $30 is too much, one can move down to the $15 plan without changing the contract. As others have pointed out, Apple is more stringent about what they allow on their device, but that also means a smoother and more secure product. After comparing my Iphone with my friends EVO, it is pretty clear that the Iphone is the more solidly built phone, less cheap parts etc. As long as you don't drop it and smash the glass (not a problem for me as I have it in a case), the Iphone is more likely to last for 2+ years. That's just the feeling I got when comparing them side by side. EVO felt like it was more cheaply made. As far as At&t's service. I live just north of Milwaukee, and I've never had a problem with my phone cutting out. I think that is a bigger issue in cities such as New York. Actually, I've been far happier with At&t's service than I was with my previous Sprint phone (although, that was in a different city (Orlando), so I can't speak to Sprint's service here in Milwaukee).