Hi, Wondering which carrier, Verizon or AT&T, has better iPhone 4S service (speed and reliability) in New York City -- mainly Manhattan? Voice? Data? I know theoretically speeds are higher with AT&T, but has real world service with AT&T improved on the 4S? (The 3g is really slow with data, poor with voice.) I know there's all kinds of quantitative reasons to choose one of the other, but I can't find much of anything on the qualitative aspect of service. Thanks for thoughts and any personal reports!