Depends on what you want.
Sports Viewing - Ceasars, Mandalay Bay, Hilton
Chicks and Sports - The Palms, Hard Rock, Rio, Mandalay Bay, Ceasars, Mirage
Drinks - Anywhere - they're free!
I always make my bets and head up to my room so I can nurse my hangover and lay in my own bed and not have to deal with guys like Olebillsbuster who pukes all over the floor and blames all his losing bets on everyone from the refs to the cocktail waitress.
Good luck....beat the man.