I now have AT&T. James has AT&T as well, partially why I switched. But all of my family has Verizon. TO be honest, I'd prefer Verizon. Up here AT&T has been giving me problems with signal. Not sure if it's my phone or not, but when I had Verizon I never had signal issues. I drop a lot of calls now, and my dad complains of static a lot when we talk.
Only thing I hate about Verizon is that they disable their phones so much. It's annoying!