I recently signed up with Sprint and ordered the iPhone 4s. Had T-Mobile for nearly a decade but their customer service and plan value has gone down over the past 2 years. And recently one line on my account consistently goes over and costs a lot in overages (and upgrading to a bigger plan would cost too much as I had been grandfathered in on a great deal). Anyways I keep reading all these people complaining about Sprint's slow data speeds (and IMO I chalk it up to offering unlimited data while offering the iPhone, I'd expect Sprint over time to improve this). But those of you using iPhones on Sprint's network in Philadelphia overall what is the experience like? With T-Mobile I was getting 3G downtown and 2G further north outside the city. Honestly I'd rather have unlimited data then blazing fast speeds I'd go over and have to pay extra on top for overages.