If you're looking to start up new cell phone service in the US, there are dozens of choices. If you want a big-named, nationwide carrier though, that cuts the field down to four options: Verizon, AT&T, Sprint and T-Mobile.
You can narrow it down even further if you want an iPhone. Currently, only the top three carriers properly support Apple's handset. And if you're looking for the company with the best customer service, there's only one...