To me it's really close between Grundy and Sandin. I think both have the potential to be real impact players, Grundstrom a borderline top winger ala Landeskog and Sandin a potential #2, maybe even #1 if everything breaks right (skating and strength improve to the point of becoming pluses).
While Sandin might have the higher potential, Grundstrom is a lot closer to being a regular NHLer, which carries some weight in my eyes.
At the end of the day, happy to have both in the system, and hope both reach their potential.
#5 is where things become interesting for me, as we have a LOT of lotto tickets who are pretty far from their potential but still on track, as well as a few lower ceiling guys who are close to being NHL ready. For example, I still like Korshkov, but who knows what's going to happen with him?