CBS: I used to not like their straight-laced approach, but over the years I've come around on it. Adding James Brown was a big plus. Definitely the best of the four.
NBC: I like the staff and the approach. Michaels is still good, but Madden needs to go out on his senile ass though. I haven't had the fortune of seeing the Pink intro (due to either being busy or watching FOX), but when I first heard about it I certainly wondered, as Pink hasn't been relevant since "Lady Marmalade". Somewhat close second.
FOX: I've never liked their lame pseudo-sketch-comedy bits. They're only good at outsourcing their humor (Kimmell and Caliendo). Went way downhill by bringing Buck in to replace Brown, as I've never liked Buck at all. The on-site set concept works well in college football, but it's an ass concept for professional football.
ESPN: Czech's technical indictments are, quite frankly, the least of the concerns here. Much like MTV before it, ESPN evolved to the point where the focus of the network was the network itself, rather than the subject on which it was founded, and the presentation of the NFL (and the NBA, as Czech noted) is simply another example of this.
Also, Berman and Jackson are self-righteous fucks.