Who to Start Message Board

I myself picked up Grossman this week as a Monday night backup b/c Romo is my starting QB. However, i am actually leaning towards starting Rex. I don't know how healty Romo really is, Bryant and Jones are hobbled and Austin is out, so how effective is he going to play. Also it'll only take one good hit to knock him out of the game, kevlar vest or not. I think its a risk either way, but i like Rex more going up against that weak Dallas secondary.