Just out of curiosity, which of the other 3 providers isn't evil? Seriously, I'm really curious.
T-Mobile and Sprint didn't even get nominated for the Consumerist's Worst Company in America tournament this year. AT&T and Verizon both were nominated -- AT&T went all the way to the "Elite Eight" before being defeated by 2-time Tournament Champion EA.
Obviously unscientific, but the contestants were nominated and voted on by disgruntled consumers, so they are representative of "how bad" these companies are.
From a "who's best?" standpoint, in 2012 Consumer Reports ranked the majors in order: Verizon, Sprint, T-Mobile and AT&T. A JD Power report based on "network quality" also put Verizon at the top of the list in most regions. As far as I can tell, the Power report doesn't reflect overall satisfaction, just voice and data performance.