RB2 for Week 14 - Tevin Coleman or Rod Smith or Peyton Barber?

Hi, I am in must-win play-off and in a dilemma for RB2 spot.
My options are
Coleman playing today (against NO), so should I go with him today or wait until Sunday to play Smith (against Giants) or even Barber (against Lions).
Standard League with 12 teams.
Thanks for the advises.