I'm getting pretty enticed with the T-Mobile deal of $50/month for unlimited talk, text, and data. Sure, the data gets throttled at 2GB, but I don't use 2GB anyway. I've currently got Sprint and I get coverage basically everywhere in Silicon Valley. When I roadtrip I get coverage everywhere. 4G for me has been very spotty though and loses 4G signal frequently after it locks on. Thinking about moving to T-Mobile. How is it?