In my opinion, there are much more BAD DK juices than there are good ones. To make matters worse, many of the flavors do not resemble what is described.
Also, vapor amounts can be very inconsistent.
For example, I love smell and taste of a French Pipe. DK French Pipe juice tastes more like flowers you pick out of a garden. Doesn't even resemble a French Pipe.
Their menthols, in my opinion, are the absolute worst. Disgusting, IMHO.
I have a 15ml bottle of RY4 just sitting here -- it's the new formula, but it's not that bad. Just wish it was a bit stronger(the flavor). So it sits there for emergencies.
Fruit Mix(Tutti-Frutti) and the cherry flavors are actually not that bad. In fact, I've used 24mg Cherry and Fruit Mix, cut it down to 12mg by adding 50% VG, and it vaped great.
Of course, none of this means that you will always get the same consistency everytime you order.
My personal favorite is
Backwoods Brew -- great stuff, great service, and there is always something for everyone there.