Anyhow, to answer your question, most people I’ve spoken to about it felt that Verizon has better overall coverage. There are always going to be areas that are the exception, though. Someone once told me that in parts of Connecticut, Verizon service isn’t very strong.
Verizon has terrible customer service. Their reception is good, but if you have trouble with your plan… forget about it. Why don’t you do a prepaid plan, that way you pay less.