collins. i promise he'll get 2 td's and 250+ yrds, especially against houston. collins is good, real good. honestly either qb will put up good numbers for you.
defoster, he'll run all over atlanta, and probable get 100 yrds and a td. look at his last weeks performance. this guy is the second best backup in the league (next to magahee of course)
chris brown, 3 100 yrd games in a row, and now he's playing san diego? this guy is a must start.
portis vs a weak cleveland defense could also do well. you got a lot of good choices here, its hard for you to go wrong.