Flex help - Choose 1 of 3

Making a final post on start/sit options for this week.

10 team PPR, and really good flex options.

McKinnon vs. Rams, Woods vs. Vikings, or Cooper vs. Patriots?

Starting WRs: M. Thomas and Baldwin
Starting RBs: Hunt and Gordon

Also under the radar I have E. Sanders vs. Bengals but the top three I’m considering the most.

Who should I throw in the flex? Who has most upside?

1st choice: McKinnon
2nd: E. Sanders