Get the combo pack for $100 and see for yourself. It has trial-size bottles of red, black, gold, and blue. I had a really fun night with a few friends back in the day trying all of them, going from worst to best and back. We also got ahold of some decent cigars and pretended to be fancy for a few hours.
As with most liquors over $100, blue is only truly good when~
a.) someone else is buying.
b.) you are really trying to impress someone.
c.) you see it in a bar that should not have it. always ask about it, idiot bartenders will sometimes charge you the same as a call.
Anyway, It's really distinct, but it's also two-hundred fucking dollars.
I personally like black...or green, if it's an occasion.