I have a fairly large collection of scotch whiskys of all types; over 55 bottles currently. I like them all but I have a particular fondness for the peaty/smokey whiskys made on the isles of Islay and Skye.
Like one's preference for knives of a particular type, one's taste in scotch is also very particular.
If your friend's son likes Glenlivet 12, then I'd simply suggest buying him a bottle of Glenlivet XXV, which is an outstanding single malt whisky, but it's not cheap; running about $400-450 (before tax & shipping) depending on where you buy it.
If you're on a tighter budget, you could consider a bottle of Glenfarclas 25 or Dewar's 25, which cost about $200-225/bottle, instead.
You could save even more by buying a 1/2 bottle of Dewar's 27 (the only way it is sold is in a 1/2 bottle) which costs arounf $100/bottle. It is even better than Dewars 25 IMO but again that's a matter of personal taste.
Glenfarclas is lesser known but very fine brand of single malt whisky made in the Highlands region of Scotland. Dewars is widely recognized brand of scoth whisky. Dewar's only sells blends of scotch made by various distilleries but it is known to rely heavily on Alberfeldy -- again, a lesser known but very highly regarded Highland scotch -- in it's blends.
Anything that you buy among these suggestions that your friend's son does NOT like, I'd be happy to take off your hands.
