Longmorn 20yo 1992/2013 (50.9%, Berry Bros Selected by Berrys', Refill Bourbon Hogshead C#149091): fresh and lively, bursting with lemon and waxy orange skins.
Longmorn 24yo 1988/2013 (46%, Berry Bros Selected by Berrys', Refill Bourbon Hogshead C#14385): whereas the first one had the impetuousness of youth (at 20!), this is much more elegant and charming without even trying. Darker, juicier oranges, perhaps a bit of leather and a general fullness.
Glenrothes 1995 (43%, OB, ca 2014): buttery as only 'rothes can be. Butter, butter, butter. Slightly smoked butter, if anything.
Glenrothes 1995/2013 (45.5%, OB Vintage Cask, Refill Butt C#55): spectacularly different and, to be fair, unlike any Glenrothes under the sun. Fresher, fruitier and grassier than the regular 1995, with little to no butter whatsoever. It is even relatively fairly priced to boot (for an official 18yo single cask).