Tough spot with your WR's... I would guess that out of the 3 that you listed, that Moss would play the most snaps. However, I don't think he will score the most fantasy points.
DJax is a mess and is even deeper into Andy Reid's doghouse. I'd rank him at the bottom, despite his speed and athletic ability.
Robinson would be my choice even with a returning Miles Austin. I think that he has a high potential upside and that Dallas would be stupid to drastically cut his playing time with the way he's been performing... sure it's a risk, but all 3 of your options are risky and I think this one has the greatest potential payoff!EDIT - Just read that Robinson was held out of practice with a shoulder injury. I'd probably go with Moss now.
I'm leaning towards Murray over Bush and find myself with the same dilemma re: RB's. I'd be interested to hear what you have to say about my similar question! viewtopic.php?t=510288