I play at Champs, and the 25NL and 50NL 6max are the toughest games. The next highest stake, 200NL is very loose. I have no idea why. You make a shitload of money there though. I'll buy in short for 50 and be at 400 within an hour. You just know some guy deposits his whole check hoping to hit paydirt against seasoned poker players.

One guy named Hoyohoyo just sits down and camps very obviously. He always walks out with about 1K. I never enter a pot with him if I don't have to, since he's as tight as a nun crotch.