I am a long time lurker, and not so long time poster. I have had an iPhone in some form for the better part of three years. I am going to pick up a 4S soon, but am unsure which service to get. I am an AT&T customer with grandfathered unlimited (which seems to be moot with reported capping of data down the line). I live in NYC. Should I switch to Verizon? What is going to give me the best all around package of data speed, call quality, and reception. I have had issues around dropped calls, but other people are not alone in this. I just want make sure I get the right plan, and ensure that I don't just jump the fence for what appears to be greener grass. Any thoughts? I am appreciative of any advice you experts can provide. Thank you in advance.