I really don't recommend paying for anything when it is all F-R-E-E right here!
For draft prep, Kensat typically posts a thorough listing of his top players by position every off season. Plus there are thousands of discussions which further analyze the top players and then help to refine your decisions.
For setting your roster, we have our own Start/Sit column (look to the left). Though I do look at CBS Sportsline and Yahoo, given I play on those sites.