I have visited this distillery in Dufftown (the self titled Malt Capital of the World) on number of occasions and as you would expect for Glenfiddich it is slick and well done. Supposedly it was the first distillery to open a visitor's center as well as being one of the first distilleries to actively market their single malt whisky, which is now the world's largest selling single malt brand. The facilities are as good as any distillery I have been too with a large visitor's center, shop and a nice restaurant. The tastings perhaps are not as generous and free flowing as some of the less commercial tours, however that is not really a complaint but more of an observation. I also like the fact they are big enough to stay open all year, including Sundays compared to many distilleries, even major ones, that have quite limited seasons and hours for their visitors centers.
I love their entire range and the 21 year old which is finished in a rum cask, is one of my favorites of all time. I also got a bottle of the limited release Snow Phoenix as Christmas present in 2010 which was devoured rather too quickly (thanks Dad) and before I started taking detailed tasting notes. Tammy enjoys the Glenfiddich liqueur over ice as well.
So what's not too like? Well for some apparently there is plenty. Glenfiddich often manages to raise the ire of the scotch whisky anorak community, and at the very least it's popularity and ubiquity seems to turn off those who thrive on recommending obscure distilleries whose total annual liquid output appears to amount to slightly less than most people use to make their morning coffee.
That's their loss and leaves more for the rest of us, not that there is much danger of the world running out of Glenfiddich, which in itself makes the world a better place.