Start Bernard Berrian or Larry Fitzgerald this week??

I know Larry Fitz is better, but he has 3rd string Tim Rattay throwing it to him (not to mention he doesnt even know the play book yet) , they are going against Redskins D, and I think A.Boldin will play this week. On the other hand there's Bernard Berrian who Im not crazy about but at least he's Griese's number one target. They will be playing the Eagles. What do you guys think??