I have quite a fondness for Glenfarclas , not only was it the first distillery we toured , it has produced some great old whiskies .
Heven't tried the 12 but i bet it's up to the standard of the 10,15,21 and 105 . The older ones have all been SMWS ( Numerous ages between 30 and 38 ) and all have been stunning for their age , one of the best one's (apart from Mel's 38yo !) was a 31yo we had at a showing of the "Whisky Galore" film at a local cinema , it was great sitting watching a great film with a superb malt in your hand , wish the SMWS would do it again , great night !
The Glenfarclas is now , IMO , a far superior single Malt to the Macallan , i think the Mac is hanging on to past reputations ,the past few 18yo's have been of differing quality compared to the earlier one's i was weened on !
Regarding Sherried Malts , as most people who know me , i tend to try and avoid sherried one's , my biggest mistake was buying a Glendronach 15yo , still here with only a wee bit drunk out of it !
I have enjoyed a few sherried one's , the Ardbeg 239x's , some of the Laddie Sherried valinches (the current one is very good) , an Adelphi 1971 Glen Grant is superb (christmas cake in a bottle!) but there are a few i will avoid ....
Sherried Linkwoods (over whelming sulphur ).
Sherried Jura ( as well as normal jura , had a 20yo SMWS which was awful) .
The afore mentioned Glen(jerez)dronach 15yo .
but it's everyone to their own thing and i prefer my malts from Borbon casks (says he who owns a Laddie Bloodtub and RS Hoggy...) , mind you Refill sherry can add that little something to a malt and not over whelm it !