I don't hate any of the commentators aside from Dick Endberg - the guy has absolutely nothing to add aside from his "oh my's" and "delicious" comments.
Drysdale, McEnroe (both), Carillo, Courier, Gilbert or Shriver actually are actually around the game and used to be pros. Often they add some anecdotes about their work or interactions with players in locker rooms or other places.
I don't even mind Chris Fowler all that much. It's just Endberg that annoys me to no end.