Yeah, ok, gonna revive an old thread.
The #1 "Tmobile sucks" complain on the internet is coverage. For me, Tmo has the same exact coverage that VZW has (for the areas I'm in), but for me, Tmobile is faster, cheaper and has excellent customer service.
I don't know anyone in my area who has T Mobile. Even though there are several stores around here. I take that to mean they don't have great coverage in my area. I could be wrong about that though. I'd love to try them out but I also don't want to go through the hassle of another carrier change in the last year. I just moved all my lines to Verizon. If it were just me, I'd go for it.
Had T-Mobile 3 years ago and couldn't get a signal in the greater Grand Rapids, MI area. We would get signal at home typically 1 bar but my wife couldn't get signal at work and we couldn't get a signal 2 miles from our house. So I've had to go back to Verizon even though they are more expensive.