Glenlivet Nadurra.
Oh my. It is interesting (especially as I picked it for around £20, inexplicably reduced in Waitrose). Matured in "First fill american white oak casks" I expected it to be light, and it is with a lemony hint, but there is a richness and depth with a fairly light peatyness. Slight sweet overtones, too. Exceptionally smooth for 60% abv (120+ proof). Very drinkable, unlikely to become a favourite though.