Sites to play fantasy

Hey, I am looking for reputable sites to play season-long leagues, preferably in a tournament-style or a chance to win a bigger prize. Auction draft would be even better. I already have a bunch of best ball with draft.com and yahoo, so I am not really looking for best ball.

Myffpc came up in a search, anyone play? I have always played in season long with my friends but I want more leagues. Any advice or suggestions would be appreciated!