I like the Raps announcers. They do seem to have a lot more knowledge of opposing teams and the game.

Blaha and Kelser also don't really add to the excitement as announcers, kind of bland and predictable, whereas someone like Kevin Calabro from the Sonics adds that extra oomph to the game. He is my fav commentator. Can make the hairs on the back of your neck stand on end.

You can hear him in action in this Shawn Kemp Top 10 Plays video. (All except plays 9 and 2)

YouTube - NBA Legend Shawn Kemp Top 10 Career Plays