I think I'd go with Jonny.
For an every-down RB I'd take Unga & maybe Jamaal over Staley for 4 quarters. With the game on the line, I take Staley.
For 4 quarters I take Detmer or Wilson over McMahon, I think. With the game on the line I take McMahon (& Young second, if not Wilson — it'd be a close call between those two). I think the QB is a really tough call that'd come down to personal preferences.
Collie's the only indisputable choice there in my mind.