Who should I start, Mendenhall or M.Turner for week 3 as my second RB?

Im also using A.Peterson as my other RB and D.Mcfadden as my WR/RB option.. R.Moss, Santana Moss are my 2 WR.. with M.Schaub at QB. It's a small league and I also have Calvin Johnson and H.Nicks on the bench. Thanks in advance