[Morrek]

I just sit down at whichever has an open spot, then after 20-25 hands I make a judgement if it's a good table or not. Depends on alot of things but basically if I feel like I have an edge over atleast 2 players (either because they play too many hands, they are predictable and easily abused, and/or I have position on atleast one of them). If I feel I don't then I leave, there's usually loads of tables so finding another one is no problem.

Another thing I just started doing today was open up like 10 tables, sit down at 4 (my standard) and see if they're good. If not I change whichever sucks to the next one on the list, and hopefully I have 20+ hands on each of the players at the new table already. Repeat until all 4 tables are good.