Fantasy Football Keepers: Michael Vick and Aaron Rodgers?

I can choose 2 FF keepers in my NFL.com league. In addition to Vick and Rodgers, I also have McFadden, Witten, MJD, and Greg Jennings. Which two should I take? (Oh and btw my league starts two QBs, not just one...so Vick and Rodgers would both be starting if I kept them)