For my money, Bells is #1. They do so many styles so well. Granted, I haven't had beers from all the coastal breweries. But the IPA seems to be the measuring stick right now and I still say Two Hearted is the best I've ever had...and I've had Dogfish beers. Many breweries do one style very well (and right now, if you do IPA well, you're king) but Bells does dark well, they do wheat excellent (Oberon) and I think they own IPA's (Two Hearted and Hopslam). In my mind, they're the best.
I've never had a bad Bells.
And right now I'm having a 2HA