John Brown or Kareem Hunt flex?

I have no idea who to start this week. Hunt as an awesome matchup and i think he will do great. Brown has a great rapport with Josh allen but tough matchup.

FULL PPR
currently i am starting in my RB slots Carson and Bell and in my WR slots i have golladay and allen robinson

That is a tough one. A lot of the time I lean with playing the guys that got your there, but the difference in matchup is vast between these two that I would play Hunt this week.