I am having a little trouble deciding on who to start at a few positions this week. My team is 3-0, but I have some potentially tough match ups this week. Who do you start at these 3 spots???

QB (need 1 of these)
Romo VS Det
M Sanchez VS Bal

WR (need 2 of these)
Meachem VS Jac
Manningham VS Ari
AJ Green VS Buf

DEF (need 2 from teams on the left)
Dallas VS Det
Pitt VS Hou
SD VS Mia

Anybody got any opinions? Help me out here!

Bunch of coin flips. I'd start Romo if Dez plays, if not i'd go with Sanchez. Detroit's pass defense is good. I'd go with Green and Meacham, but would replace Green with Manningham if Nicks winds up sitting. Then i'd go with Pitt and SD because Detroit's offense is good too.

Upon further review, i'd go with Manningham over Green either way. Cincy's passing game needs to show more consistency before i'd feel comfortable starting any of their players. I think Green is more talented than Manningham, but he's a riskier play because of his QB.