I got some of these tanks and a bunch of LR dual coil carts, and I do have a funny story which I don't believe I've told on this forum. So if you look at the carto that comes with the tank you'll see what looks like a white plug in there. So the first one died, and I figured well you push that down in there with your drip tip. Well that didn't go too well, I kept trying to break them in but kept getting toxic burnt fumes from some and with others there was hardly any vapor.
So I wasted several of them and went on another part of the forum and asked some guy what the hell I was doing wrong and he said you're supposed to take those things off before you use them
It took my lungs a few days to recover from this and I think I vaped more "smoke" than juice.
Now that I know how to use them, I don't really like them, it's not the tanks it's the atties. This thing mutes the taste as I would have expected, with the filler material in there. I've gone back to my trusty 510-t's and it might be a while before I try another carto deal again. I did poke a much bigger hole in it with a nail and that helped but you can drip right into the thing and the taste still isn't very good.
The tank itself worked great though, until the time comes to change the carto and you have to be careful not to have all the juice leak out on the table. If you pull the carto down a bit to the point where you would fill it, you can pour the juice into a bottle and save most of it.
Overall, I can see why so many people drip after I used this.