I personally like Dan Crawford. I think he does the best job when it comes to calling the game, controlling the game and his willingness to listen to players after a foul is called. I also think Bob Delaney is also a good ref.
crawford is THE best imo. back when yao was being tortured by the whistles left and right, each time i saw him officiating for the night, i'd feel some relief. joey crawford would be just as good if not for his temper. outside of the 2 crawford's, it drops off to another level.
dan crawford is def one of the best if not the best. probably the least prone to make calls based on players rather than plays, or let the emotions of a game get to him. id actually say joey crawford is on the opposite end (as evidenced by last years fiasco). bavetta probably used to be good but dude is so old now, he really needs to retire.