I know you said one
juice only but I'm sorry I can't just name one.
My favorite juice changes between 2 juices from 2 different vendors. First favorite is Apple Teaser from Alien Visions. The throat hit is INCREDIBLE. I effin love this juice! It has an amazing clean crispy apple flavor to it that IS NOT perfumey at all. Second favorite is Tasty Vapor's OLD waffle. They changed the recipe recently and it's completely gone to ****. And sadly I'm running out of the good stuff, will not be buying more. So, soon, I will be down to just one favorite. The waffle tastes like a genuine buttery waffle with maple syrup. You can taste the breadiness of the waffle. Everything blends nicely and the throat hit is amazing with this juice as well, given you're using a great atty like I am. The new recipe tastes like a frozen waffle with cheap syrup and a weird powerful cinnamon taste. Sad stuff.
EDIT: Please trust me when I say I am *NOT* bashing Tasty Vapor. I love them and all of their juices but there have been a lot of people upset about the recipe change and I am one of them. And with that said, yes I may still be upset about it but I am just professing my love for the good old recipe and speaking the truth about the new recipe! Anyways, that's that.