I'm trying to figure out which one of Sprint or Verizon to choose based on reception and call quality in Manhattan. Does anybody have any opinions? I just want functional service that will not drop my calls, give me a decent number of bars, and will aid clear conversations -- don't want perfection, but as close to it as possible. I'm considering taking both of them and trying them out during their trial periods... but that's such a hassle. Any advice? Thanks!