Okay, taste is subjective, so reviews are only helpful in knowing what other people think. That said if you can find a reviewer that has a pallate similar to yours thats great. But again taste is subjective.
What I would suggest is to try many many different types of juices. Rather than buying a large bottle of a juice you don't know about (say a 30ml bottle) I'd go with a smaller bottle. Depending on how long you have to vape something to get an idea of whether you like it or not this can be a 3ml-5ml "sampler" bottle, or 10ml. If you have a B&M in your area, or that isn't like out of the way for you, I'd suggest stopping by there and sampling their juice bar (if they have one) or smelling the juices they have on offer.
I've found that my sense of smell is more accurate than my sense of taste many times (I have recurring bouts of vaper's tongue from 20 years of smoking) and about 60% of the time I end up buying a juice based not so much on what it tastes like but what it smells like.
If you go by your nose it is also a good idea to bring with you a small bag of fresh coffee beans or fresh ground coffee to clean your nose (not so great with coffee flavors though). I know that sounds like a strange suggestion but I actually learned that from my wife--she used to buy a ton of scented candles when I smoked and she needed to be able to smell the "true scent" in order to know if it would make the house smell better or worse. I at the time didn't care--I couldn't smell it anyway.