Taste being what it is, I second what Elvis said. No amount of reviews and opinions will tell you whether you like their juices or not.
I've tried a few, and my take is : their flavors are very original, which explains why people either love them or hate them. They're also very complex, which is a good thing IMO, and very strong (it's one of the very few brands that I can actually taste). For me, however, they are a thousand times too sweet.
Gambit literally made me gag, like I was inhaling a spoonful of sugar. I didn't dare trying Grandmaster.
Castle Long is strong. I would like it if the coconut was a bit more subtle. As it is, I mostly taste roasted and coconut and the coconut is very "in your face". Since I have a full bottle, I will let it steep for a few weeks before I decide whether to trade it or keep it. Even if it gets better, it would still be too sweet for an ADV - for which my wallet is thankful.
Queenside... it took me a long time, and a Kayfun, before I could taste anything. Before that, it was just sugar. Now I can taste the orange, and it tastes just like orange ice cream. It's not the tart orange type. I wish this one was less sweet too, but I will keep it for these rare occasions when I want something sweet.
Lucena is the one juice I like in their whole line. It could just use a tad more peach, but it's really good.
64 is a joke. The description is so totally awesome that I felt let down. It tastes like dill, and nothing else.
I liked 5th rank when I tried it, and will try it again, can't decide on this one. However, it's not sweet, and that's a nice departure.
Overall I found the Mixology line very interesting, but they all have ... something... off, that I dislike. It's like they all have that underlying grassy taste.
The signature line is nothing but sugar for me. I won't even try the other juices in that line.
I will keep vaping Lucena, but I probably won't shell out $27 for them again. Don't get me wrong, they ARE quality juices, and they DO separate themselves from the crowd. But they just don't work for me. Some of them I hate, some I don't like, some I do like but don't love, and the others I want to like but I can't.
And filling a KF with the glass thingy is a big moment of solitude.