WR's Brandon Marshall,D.Mason and/or Ochocinco.... in week 5?

I've got an arsenal of great players in week 5,but I don't know who I should sit and who I should start in week 5.First,here are my players: B.Marshall,D.Mason and Ochocinco at WR and M.Turner,J.Harrison,M. Lynch and Fred Jackson at RB.Now,I can play only 2 of them in each position.Who should I start and why?