I'd play McFadden over just about anyone, except for the very top tier backs. In my eyes at this point of the season McFadden is the better play.
10 Team QB Flex 1PPR - Week 3
QB: M. Stafford, J. Flacco
RB: C. Johnson, D. Murray, D. Sproles, CJ Spiller, M. Leshoure
WR: J. Jones, E. Decker, A. Brown, P. Garcon, B. Lafell
TE: J. Finley, M. Bennett
K: D. Akers