The first one I opened, newbie mistake, I tried to pull the stuffing up, and detached the coil from the carto (at least I'm pretty sure I did). Flooded it, now it doesn't seem to do anything at all. Fine, next. I filled it to a reasonable level and have enjoyed the flavor, but they are thicker than my cartridges. It's more of a workout drawing the vapor with that extra .5mm of diameter (the rubber tip goes down inside the tube, rather than over the edges like a cartridge's tip does.). I'm just not digging that at all. Do they make flat tip ones, and do they last as long?
ALSO, I know you can fill them a couple of times, but when will you know the carto is spent for good?
ALSO, I know you can fill them a couple of times, but when will you know the carto is spent for good?