in terms of quality of signals and service, I'd say verizon is much better than voicestream. I know for a fact that cell phone makers that want contracts with Verizon have to pass their strict power output levels. So their phones are adjusted to give better quality connections. I dont know about Voicestream, but quality-wise you can't go wrong with verizon.
True, that sprint has better phones, I've been pretty dissatisfied with their customer service and Maryland coverage quality.
Good deal, for the $40 for 350 minuutes. I never go over 400, but always go over 200.
(if any of you are in college, there are deals through your school, that you can get under a 'business plan'. You get 15% off every month. So I actually get better than 40 for 350 minutes )