Picking the Right Table

[JPSmiley]

Just wondering how you guys go about picking a table to sit down and play NL cash Holdem. Is it better to choose a table full of people with low stacks compared to the allowed maximum, since the players will most likely play conservative, and u can steal pots, or a table with 1 person that has significantly above the maximum, meaning the table is probably full of weak players and he is cleaning up? Or do you want people with large stacks in order to win more off of them? Also, when do you know it is time to leave a table and try a different one. Or what are signs (besides a growing stack) that you are at a good table. Thanks for any info.