I bought a box of these after a good experience with the CE2's and was ready to quit vaping period. 1st one was awesome great vapor prod and flavor (if a little messy learning to fill them), but 3 of the 5 leaked straight out the pack. Last one seems to be holding up so far. Ordered some more and will try some experimenting with why they leak because I like them so much. The cool and massive vapor production is awesome. Much easier and convenient versus the Boge's and atty's I have used.
Couple of tips I have learned, you get an extra bung plug and condom in the pack, but keep the old plugs before you toss them. You will lose more than one. The tweezers aren't the greatest but suffice. Someone else said it first, but I will repeat, fill slowly! Any drips down your needle will cause the top to fill up and leak down the center tube. IME Gurgle vape = Bad vape.
I sure would appreciate anyone with some knowledge of how these work helping in figuring out why they leak so badly out of the box, and posting back. Mine leaked even using the condom. When I pulled off the condom, it just started pouring out.