QB this week - Keenum vs. CAR or McCown vs DEN?

First week of playoffs so obviously gotta give this my best guess.

Im in the exact bind and going with Keenum but its only because he has better weapons.

and its just a hunch with nothing to support it.

I also have Thielen and Anderson so the stack is there either way.

maybe base it off of if you have the stack or not.