I've read about AT&T issues in NYC. We are in NYC for the weekend and I have to say that I'm pretty impressed with AT&T LTE network in NYC.
HSPA+ is somewhat spotty but LTE is good all over the city.
Verizon works great in NYC, LTE and 3G. Its reliable. I live here with verizon iPhone 5.
3G reliable? I always poke my nose with people when they have an iPhone for conversation. The people in NYC that I talked too that have VZW 4/4S said that data was 'eh'. People with AT&T 4 said it stinks, people with AT&T 4S said it was spotty. We ate at the Hard Rock and I went into the AT&T store. The rep told me that the AT&T 4 stinks and the 4S is better but not by much. She said that AT&T LTE was very good. At least she was honest.
Seems that only the fastest network is any good if that even is. Like my LTE is plenty fast, but when only 3G is available, it is horrible. Probably even worse that 1x/Edge would normally be.
But then thinking about that, what do you think a salesperson would say? They would say what they need to say to sell the most expensive item.
The point is the rep said the 4 stinks, the 4S is better but not much better. She said LTE was pretty good all over NYC for the most part.