The best in the world that I have run across is some from the island of YAP in Micronesia. Foot long colas that started off light green with white hairs that went through a bunch of color changes until it got to the top.... the leaves were black and the hairs were dark purple. It had a spicy flavor, and 1 hit would put you into a total mindfuck, 2 hits and your tripping. You could pick up a single cola, set it down, then rup little balls of resin off your fingertips.

The only thing that I have found in the US that compares is some California Pharmacutical that my brother got for me with his medical card. One hit and your done, 2 hits and you hear colors.