Bumping for
@DusseDez ,
@hesskilla , and
@ChoadCane ....
And I will say, in response to
@hesskilla's opinion that "a good scotch (or bourbon) shouldn't be smooth," I think I understand what you mean, but disagree with what you are saying. I'd say a good bourbon (or scotch) should always have some complexity in its flavor profile.
First off, it's all about what you like. Personal preference always wins. So if what is good to the individual's taste is a "smooth" finish, then it's good for them.
Second, whether the finish is "smooth" or "spicy" or "hot" is going to depend a lot on the mashbill, the age, and the proof. That's because what most people call "smoothness" in their drinks is really less about flavor and more about how you perceive the burn from the alcohol. Residual sweetness can cover that up some, and age can also level off the burn (to a point). And a bourbon can absolutely have complex flavors and still be perceived as smooth.
For example, a wheated bourbon aged 10-12 years is going to generally finish "smooth" because it's probably got little/no rye in the mashbill, has been aged long enough to remove some of the burn from the alcohol (and adding flavor from the oak). On the other hand, I have a bottle of Weller's Full Proof at home (that most bourbon drinkers, myself included, would consider a very good bottle) that finishes w/ cinnamon flavors and lingering heat (because of the proof) that I enjoy very much but would never call a "smooth" bourbon.
Personally, I consider bourbons like Angel's Envy, Eagle Rare, EC Small Batch, Weller's 12 year, etc... very smooth but pretty good bourbons. But to each their own.