I purchased this bundle with a friend to try out the different flavors. She took the strawberry and I got the other 2.
I decided to try the mango green tea first, since it sounded refreshing. It does smell a bit like as- durian. And the aftertaste is also like the smell of durian. You can definitely taste the artificial sugar, but I'm used to it (pre-diabetic), so I don't mind. However, I did blend this with frozen mangoes and the durian smell and artificial sugar taste went away, so I recommend using it in smoothies.
The lychee oolong is much tastier. It is very sweet, but I can drink it on its own without having to blend it, which makes it more ideal for taking on the go. It does taste like lychee oolong, but it won't be exactly like how a tea shop would make it.
My friend's review of the strawberry (which I read was the best flavor at the time) is that it is just okay. Both she and her husband tried it and weren't huge fans of it because of the strong artificial sugar taste.