Langford, Diggs, or Hurns FLEX?

Langford is likely starting for an injured Forte again, and looked good last week vs. a bad Chargers run D, but is he a smart play against an injured St. Louis D?

Diggs coming off his first mediocre game of the season, Bridgewater likely to start. Oakland secondary has been coming down to earth lately

Hurns nursing a foot injury, playing against a terrible Baltimore D, but will he drop back to minimum targets with ARob not being shadowed by a shutdown corner. He seems like the riskiest play this week.

What do you think? (Standard scoring):

Bortles
Gurley
Yeldon
Brown
Cobb
Ebron
______?
Carolina D
Barth