I tried the red bull (or whatever they're calling it nowadays) and I thought it tasted exactly like the drink! Keep in mind I've heard several other people disagree with that, you know taste being subjective and all.
I also tried the one that is supposed to taste like a Jager-bomb...lol, I really need to learn these flavor names. And I don't remember whether it tasted like the real thing or not, I just remember that I didn't like it. Although I do like the drink, that flavor is just not something I want to vape.
Other than those two I really enjoyed the Cafe Mocha flavor. I didn't like any of the other coffee flavors, but I don't really like the taste of coffee.