I also couldn't quit while using tobacco juices...there just isn't one that tastes like a real cigarette enough to be satisfying. My real success came when I got into the flavored juices, especially the fruit and mixed flavors...which I love!
My miracle juice was actually 3 - Chocolate Bavarian Cream from my local B&M, Gummy Blood and Unicorn Blood from fuZion Vapors. Once I had those 3 in hand, I was able to stop smoking.