I'd go with Nelson, when your alternative is Titus Young..
But i'm considering whether to start Nelson or not too, so really interested in other opinions too
2013 roster (10-man PPR league)
QBs: R. Wilson, Romo
RBs: D. Martin, Sproles, L. Miller, G. Bernard
WRs: R. White, Amendola, Josh Gordon, Edelman, James Jones, Keenan Allen