Dunn or Slaton? Who to Start?

I think people are easy to go with Slaton with this one because of the great game he last last week, but think about it. He's going to be sharing carries with Green and even the Texans coach said he's going to lighten the load on the rookie. Then I have Dunn, who will be the premiere running back against Detroit but he's no where near the Dunn he was say 8 yrs ago. Im stuck on this one. What you think?