Crucial flex decision

last week I thought it was a no brainer and started Kenny stills there and he still may be the right play this week but strangely he wasn't on the field for a lot of plays plus the saints blew.

choices are

Kenny stills vs. Chicago
Jordan Matthews vs. Dallas
Joique Bell vs. Minny
Antonio Gates vs. Denver
Chris Ivory vs. Tennessee
Michael Crabtree vs. Seattle

only 2 i'm certain I won't consider is crabtree and ivory. Kenny could have a bounce back game as the bears are susceptible to the deep ball. bell has been on fire for the last 2 weeks but I have Jamaal and CJ so wasn't gonna start him over those. Gates had two TDs against Denver in their first matchup. Matthews is hit or miss but going against dallas should be good for him.

i'm not sure what i want to do. win this and i'm in the finals. help me out bros


eta: ppr league