How's the service with t-mobile? I'm thinking of leaving Sprint & going to t-mobile but I don't know if their service is really any better? It's always so hard to tell from the coverage maps & other websites. And how is their customer service? This weekend I stopped into a store & was talking to a rep there, I had to educate him about the new plan that had started a few days earlier. I never can tell if reps really don't know, or are trying to sell a higher priced plan.