My absolute number one: Vaping Monkey's Tropic Monkey. It's a watermelon bubblegum, I vaped 3 15ml bottles of it in a row with no other juices. It's that good. Besides that, I just go through and pick out some flavors that seem tasty on Mt Baker Vapor. If I'm not sure, I'll look at the bestseller list. From them, I've really enjoyed watermelon, blueberry, bubblegum, cotton candy, and hawk sauce (berry menthol)