Bill Walton actually knew what he was talking about, could pronounce most names, and he was great with Jones.
Hubie Brown rarely knows what game he's watching, can't pronounce most names, and he doesn't add anything to the commentary...
However, none of this compares to the hellish sound of Mark Jackson, who did nothing more than try and sound cool and kiss butt to the league. JVG, who did nothing more than rant about the refs. And the other guy, who just sounded like a girl.