Vick or Derek Anderson

I have Kolb and Campbell. My league limits FA moves to 3, so while Vick may seem like a easy choice, you have to factor in that he may only start a few games before you get Kolb back.

My main concern is that when Kolb does come back, i have a two QB deal in Phila that changes from week to week.

So should I pick up Anderson and hope that Kolb returns to get close to 100% of the Phil snaps, or pick up Vick and hope whoever wins out of the two when kolb returns gets the bulk of the work