Vick by mile!!!!!!!!!
If you want 22 interceptions from a 40 year old QB whos time passed 4 years ago then you'd go Favre.
Vick is a 3-dimensional QB who has an equally good passing and running game. It will take some time for him to get used to the NFL again, but if Childress was that desperate to not get sacked, Vick is the answer.