fred jackson or cedric benson?

Go with Benson. I think his running style fits the Bengals blocking scheme pretty well, and I think he could have a very solid year. 1,000 yards for the first time in his his career is a definite possibility.

I'd expect Buffalo to be down big early, which may take their running game out of it. Besides their offensive line is terrible. Jackson should catch a few passes, so the only way you should even think about him is if it's a ppr league.

Regardless if it's a ppr or a td, I'd still lean to Benson