Half-point PPR: Diggs or Thielen in Flex?

Consensus seems to be Diggs, but a few suggesting that Pittsburgh is more vulnerable in the slot, which would help Thielen. Is this a volume vs upside decision? Or is Diggs truly the better all around choice? Any insight based on the Steelers D?

This is truly a coin flip. As useless as that comment was I just wanted to suggest that you trade one of them to avoid this decision going forward. The fact that they both were top 5 receivers week 1 is unbelievable. The chances of that happening again are very slim. Sell High!

Thanks for this response, by the way. I did try to move Thielen (for Buck Allen) but was turned down. Gonna keep trying though!