I'm not really that into hard liquor, but (primarily due to the Busse tie-in) I've been trying different Scotches lately. So far and in my opinion, the best has been Pig's Nose. As 5-year old blended Scotch, it has the worst "specs", but tastes best. That being said, I didn't want to spend more than $40/bottle, so I stuck with "plebeian" brands:
Speyburn (10yo Single malt),
Dewar's White Label (blend),
The Glenlivet (12yo Single malt),
Pig's Nose (5yo blend)

The Glenlivet was also pretty good (although not quite as good as Pig's Nose). I've drunk Glenfiddich 15yo before, and remember it as good, but having decided that I like Pig's Nose as a straight up sipping Whiskey and can get it for about $37/bottle, why look for something more expensive?