re: AT&T vs T-mobile

I've had Tmobile for several years. Pretty happy with them, especially with the international data and texting options.

Switched to Cricket for a year, but the service was awful (including having your data throttled or even not function when you were around a large number of AT&T users because your network access was deprioritized).

I'd say that from a customer service perspective, T-mobile and Winn Dixie have been two of the better companies I've dealt with in recent years.