I tried the Peach Mango flavor recently and wish I could find it in stores in NYC! It was delicious — not too sweet, and the flavors tasted natural. It was really refreshing, too, and the branding is beautiful. Sometimes I'll put a non-alcoholic drink in a glass so that I feel like it's blending in, but I wanted to show off the can.
I can't say whether I felt the mood-boosting properties, so I'm not sure how much truth there is to that description. I was in a good mood before I tried Hiyo :)