If they actually have a coverage map that looks like what they tout here, I MAY switch. But, as usual I will believe it when my coverage indicator states LTE just a few miles down the road.
That's definitely not their LTE map, that's their "full coverage" map... including areas with only EDGE service and partner roaming. Having it all in dark pink is very deceptive.
For one thing, T-mobile has no towers in the entire state of Wyoming, its all roaming on ATT and other carriers, and definitely not LTE.