My Sprint phone crapped out yesterday and I was already out from under my contract so I switched to T-Mobile but I'm moving to Houston in the fall so I was curious if anyone knew how the service is down there. I'll generally be inside the loop.
Just switched from Cingular to T-Mobile Blackberry 8700. Haven't had any problems except when I'm in my office on 51st floor downtown, but most people get crappy reception up here. Overall, much better than Cingular.
I forgot to add that I work downtown and live in the Heights. Inside the loop 80% of the time or more.