K Allen or Drake as Flex 2 (1 Viewer)

Semi Final matchup.  I'm the #1 seed and a big favorite over the #4.  Looking at my Flex 2 spot and it's either Keenan Allen or Kenyon Drake.  I've been riding with Allen but am concerned about the hamstring flaring up during the game.  Also, I am still in therapy over him leaving a Thursday night game with a hip pointer when I was in the semis 2 years ago.  Cost me a W that weekend. Thoughts?

(Post your scoring system). This seems like a floor (Drake) vs. ceiling (Allen) trade off. Allen's likely to outscore drake 8 times out of 10 when both are healthy (at least in full or half ppr), but if you're a big favorite Drake is an exceptional Flex 2 in his own right and you can avoid the risk Allen gets slowed down. I'm assuming you play 2 RBs and WRs along with your flexes, which means you have 2-3 better RB and WR options each over both these guys - your team must be stacked. I'd go Drake.

As a favorite, you care more about floor than ceiling.  Drake is the higher floor play here.