Compared to the 1999 3rd (18 years old) this one is much darker in every way...Nose is actually similar with this one focusing more on the stewed fruits, but the palate is where the experience jumps dramatically. This 1990 ~25 year old is super sticky and rich, without being syrupy. Closest comparison would be the Highland Park The Dark 17 year old, which was a lighter version of this for twice the price. Balblair knocked it out of the park with this one, and comparing against the younger brother definitely enhanced the quality of the 1990. Grab this (or the 1991) while you still can.