Honestly, I would say Martin or Law firm.
Cincy will run, and they will run a lot. I also think they plan to have Law firm get receptions. He is also a much big improvement in the red-zone over Benson.
Martin, assuming he takes over in Tampa eventually, could be the same in Tampa. But you have Blount there, so that dampens my expectations.
I would say Wells, but I think Ryan Williams comes back and steals the show in Arizona, and I hope folks forget him, so I can nab him late for a real value.
I don't trust Green, nor Redman. In PPR Bush could be big, but if not ppr, not sure he will be a 1000yd rusher again. McGahee and Starks intrigue me, but i think those teams will rely more on pass, and won't run near as much.