Hands down. It's such a good source of information on players, that I'd probably use it even if I didn't play fantasy baseball.
It is a pay site, but worth it.
How, then, are those people of the future—who are taking steroids every day—going to look back on baseball players who used steroids? They're going to look back on them as pioneers. They're going to look back at it and say "So what?" - Bill James, Cooperstown and the 'Roids