Which 2nd year running back is going to have a breakout year this year?

Last year produced a good crop of talented rookie RBs. Do you think Reggie Bush still stands out above his fellow Sopres like Laurence Maroney, Joseph Addai, DeAngelo Williams, LenDale White, Wali Lundy, Maurice Drew, Brian Calhoun, Leon Washington, Frank Gore (this might be Gore's 3rd season).