I can't stand Mark Jackson. Something about his voice and the way he speaks that makes it kind of hard to listen to. He just doesn't flow well, and can also be annoying at times.
I love JVG. He is informative, funny, and never afraid to say what he really thinks.
Mike Breen is terrible. Always overreacts to plays and especially fouls. He calls everything a hard foul and it is really annoying. Also, he has man crushes on Kobe and Lebron which makes it unbearable to watch.
I like Reggie. He is not spectacular but better than Jackson and he can be funny at times.
I am a doug Collins fan. He is just solid.
Finally, Marv Albert should always be the voice of the NBA and call the finals. Please, step aside Breen, and let a real commentator show you how it's done.