Well, the cell phone that I use, (bring to competitions, etc), but is not mine is a verizon wireless, it really got me out of a sticky situation in Philadelphia during the Regional...I somehow locked myself in a room in our hotel where the only unlocked exit would sound an emergency alarm
however, I had the cell phone and got the number to the front desk...and they saved me. However, recently, my parents have been talking about getting me one of those virgin mobile phones where you just buy minutes as you need to...there is like a minimum you pay 20 dollars every six weeks or something. Well, I'm done with my rambling, so my official answer is Verizon...