Great comments Mark, you nailed it.
To my shots of Reserve (poured by a friend in Florida), I added some 12 year old Ezra Brooks - just a dash to a couple of fingers. I found it took away any remaining cloying taste and replaced it with even more bourbon background.
Anyway, this Reserve is an interesting variation on the Southern Comfort theme. Anyone can duplicate it pretty much by making a cocktail of say 2:1 Comfort to bourbon(s).