Flex options. Good options but no trust

So with Devante Parker active it made my flex option difficult. I have good options but their so inconsistent and I need a big day today as I am playing the super team of our league in the finals. Choose one for the flex. I’m leaning Parker. But miles sanders has a great matchup. What do you guys think?

Devante Parker
Stefon Diggs
Miles sanders
Devin singletary
Emmanuel Sanders
Kareem Hunt

Starting lineup looks like:
Qb: Winston
Rbs: Cmc/Mostert
WrS: Devante Adams/Aj Brown
TE: Waller
Flex:—