Has anybody here used the HTC Evo 4G smart phone? I have the opportunity to piggy back on somebody else's family plan and basically get one of these with unlimited everything for $50 a month. That's slightly less than I'm paying now for a much worse phone so I'm considering the switch. Here's the phone I'm talking about: HTC Mobile Phones - EVO Sprint - Overview Does anybody here have it? What do you think of it? How is the 4G compared to 3G?