The 18 year really was a below average drop. The 21....a mild improvement. The usual culprits for a refill bourban cask....mild honey, vanilla, bit of pepper and some citrus a buttery mouth feel and balanced with the oak almost feels like a chardonnay type whiskey in a way. Alcohol is much better balanced than the 18. Good but not great. It's around $180USD here in NZ which is definately not worth it. 3.4 I'll give it.