Of all the flavors that I have tried so far (be it ones from free samples, such as dragonfruit punch, brand risk, pinacolada, or the lemonade), mango meta is currently my favorite. Not only does the flavor feel natural, but it is also not super sweet, which is a perfect combination, especially when it's cooled, the taste just becomes much better.
I will be trying more flavors in the future, but as of now, this is my favorite! Highly recommended!