[wackjob]

this is a bit offtopic, but quite valid IMO:
I understand that as the stakes increase, the fish decrease, the good players increase, etc. However, at some point I would think that playing 10/20 or 20/40, 4-8 tables, would produce more profit than higher limits, due to what has to be a greater win rate and the ease of playing more tables.

Playing at a table with 1 fish, 1 Lag and 2-3 TAGs, you are going to find yourself HU vs a TAG over and over.

I guess if you play for the challenge of the game and the $$$ doesn't matter nearly so much, then playing higher limits might make more sense.