Who to flex...I’m torn

I need to choose one of these guys at my flex position in my full ppr league…

Devante Adams
Derrick Henry
Robbie Anderson

I narrow it down to mack and Anderson. Texans are good against run and bills are better against run then pass so I’d go Anderson

Yea I kno bills secondary a lil banged up I was leaning towards Robbie if ej Gaines was out