Great that AT&T is fanstastic in certain cities, but really not my experience. However, if you travel anywhere you cannot beat Verizon. I have had AT&T and after a few weeks, I end up going back to Verizon. Now, where I live, there is only two choices; Verizon or Sprint.
I have been in almost every major city in the USA, and almost all the Continental states and never had a problem with Verizon. I do tons of driving (as well as flying) and I have never had a problem with obtaining signals in 95 percent of the areas I travel in. Something AT&T cannot even address at this time.
And, if I am traveling in my Hummer, if my BB cannot locate a Verizon signal, my Onstar usually can, but that is another topic. (And if I cannot get a signal for either, I pull out a 9505A.)
I can always tell when someone is calling me from an AT&T phone. Sounds like they are on a bad bluetooth.
So, for those who love AT&T great to hear someone does. I own some of their stock and don't want them to go the way of GM.
I'll also add, I know more people who have dropped their iPhones and jumped to BB's or Droids than jumping from BB's to Droids. Everyone I know (such as me) who have jumped or considering jumping (like me) from BB's have jumped to Verizon Androids.
And from Root....
http://www.electronista.com/articles/09/12/07/hspa.gives.att.faster.average.speed/