I need to start two of these 4 WR's this week. Who do you guys think I should go with??

Steve Smith - CAR @ Tampa
Antonio Brown - PIT @ Denver
Damaryius Thomas - DEN vs. Pittsburgh
Mario Manningham - SF @ Green Bay

I think I'm going to go with Smith and Brown but just wanted some opinions. Also going back and forth between Big Ben and Jay Cutler. Not sure what way to go......@ the moment I think I'm going to go with Cutler vs. the Colts!!!