I'm with you - this is the best liqueur I've ever had. The guy who introduced me to it described it as being so complex that it's like a "marching band going up and down your tongue where you can hear all the different instruments".
The downside is that it's very expensive - over $100/liter. But since you only need a couple of drops I suppose a bottle will last forever.
Richard
(Full disclosure: I sell this and lots of other magical potions.)