I like this mango flavor a bit more than watermelon, which I usually get. It's a bit more tart. As for the substance of the supplement, it is excellent. I use it as a coffee replacement. It has alpha GPC, the best-absorbed form of choline, and just enough, but not too much, caffeine. Its huperzine also supports the cholinergic system and I feel subjectively that it helps my memory. When I don't take it on the weekends, I feel just a little slower and with just a bit less recall. I like having this "coffee" as my edge during the week.