I have an iPhone 3g, I really want the 4/4S, but cannot afford it right now. I'd also love to have an iPad for school, but paper and pen will do for the next two semesters. Well here's hoping as my handwriting sucks.
I've never had Sprint, but I did have T-Mobile, who also sucks. I used to work for Verizon, and I wouldn't have them for love nor money. I like AT&T, they try to sell you stuff, but I have always had a signal, and my phone gets me through.