TE Start/Sit - Waller or Engram?

I currently have Evan Engram and Darren Waller as my Tight Ends in a 12-team league. They both face good defenses this week. Who should I start? I am leaning towards Waller because of the target share and Golden Tate’s return from suspension.

Or, should I start both of them (one as a flex) and sit Sterling Shephard/Courtland Sutton/James White?

I currently have Waller on my team and all likelihood would play him due to how well he has been doing, Engram only scored 7 points i think the other day.

help with mine plz,
Who to play this week in the FLEX position?