Webber is good as is Reggie Miller and I think those three are the best of the national broadcasters in calling games.
I have mixed feelings about Jackson as I find it understandable that he might be sore over the Golden State situation (as a side note, he does, indeed, deserve some credit for the maturation of their core even if his limitations as a coach held them back). However, when he isn't trafficking in his "hands down..." or "Mama..." shtick, he has some decent observations. Breen is beyond deplorable with his "bang" call. His play-calling makes the games borderline unwatchable.