N: I find more sherry here than in the 12yo but no signs of rum or madeira. Apparently, it's been finished in sherry casks for twice as long as the 12yo. Sweet, candy-sweet with a spongey wash. Good bottling strength.
T: Richer, and with more complex wash-like notes with more depth of flavour than the 12yo [is all I wrote].
F: Plenty of sherried richness and chocolate caramel. Good sustain till the last.
C: Equally as good as the 12yo but for different reasons.