Higher upside Oronde Gadsden or Darren Waller?

Hello, thanks for reading. My team is a little thin at TE, i currently have george kittle starting but i am trying to figure out a solution for a decent backup with upside.

I currently have gadsden and feel like he could perform over there with mike mcdaniel. Ive always been a big darren waller believer though and like how he gets a lot of red zone targets. Just looking for opinions on who yall think has a higher ceiling this year. Thank you!