Anyway... I switched to Verizon because they have better coverage in the areas the my wife and I go motorcyling in. My friends would always have near full bars, and would have zilch on AT&T. Plus they put LTE in our area a year ago.
So, for me it has nothing to do with customer service or price (I think they equally suck)... it has to do with coverage. The commercial is right (for me)... "It's the Network, Stupid!"