pick up a RB? Hillis, G-Ellis, Tolbert?

[endzoneblasts]

There are some good RBs on waivers right now:
Hillis, Green-Ellis, Tolbert

Should I be dropping one of my RBs (or somebody else) to pick up one of these guys? I know Hillis is a monster.
Also, Breaston is on waivers. Would dropping Branch for him be a good idea?
I have:

QB: Vick, Flacco, Orton
WR: Austin, H. Ward, Colston, Garcon, D. Branch
TE: Tamme, Hernandez
RB: Ray Rice, Tomlinson, Torain
K: Janikowski
D: Pit

thanks a lot

[JackedSierra]

i would drop branch for hillis! i wouldnt bother with breaston, you have anough wr's that you probably will never start branch or breaston. hillis shouldnt still be on the waiver wire, get him while you can

[abercrombie9701]

How is Hillis on the WW??? Drop branch and pick him up