Which Running Back do I start in Week 3?

I have Brian Westbrook, Chris Johnson and Brandon Jacobs. I normally would start Brian Westbrook because he is a stud. He is playing against Pittsburgh which might limit his performance. Chris Johnson is playing against Houston and should have an outstanding game. Houston gave up 163 yards and 3 touchdowns in week one but Lyndale White might steal his touchdowns. I am afraid that Brandon Jacobs is turning into a running back by committee situation.They are playing Cincinnati and should do well if Ward and Bradshaw does not take his yards and touchdowns. It seems like they are trying to keep him healthy. Who do I start? I need 2 RB