Depends on how serious you are about it. Fat cat is fun and you get to drink beer and listen to Jazz, but there really isn't enough space around the tables to play properly and I found the $5/person/hour added up pretty quickly. Also, the PBRs made me fall down.
From what I know, the boss places are all in Chinatown. There's one I've seen that is in Cortland Alley between Walker and White. Downstairs. Kind of tricky to find, but that makes it all the more fun.
Also up for a game sometime if you need players...