Starting Fantasy RB Question

[SpartanCB]

Yeah, I know, everyone posts questions like these, but I'm struggling with this one, and some input might help...

I have 3 options for my 2nd RB position for this week's playoff matchup (my other RB is Shaun Alexander):

#1 - Warrick Dunn - going against the Bears, doesn't see a lot of touches near the goal line

#2 - Julius Jones - going against Redskins, splitting carries with Marion Barber, unsure which will get red zone chances

#3 - Marion Barber - see above

At this point, I'm leaning toward Dunn, due to the uncertainty with the Dallas backs - can you really say which one will be carrying the load? There's money at stake, so I do care a little bit about winning...TIA

[Spartan105]

julias jones probably. bears have good D. well actually go with Dunn, u never know, he might make that D look bad. actually i dont know what im talking about. you have a bad core of RB's (except alexander)

[sixkix]

Definately Barber. The guy is starting to prove himself and will find the redzone against the Redskins