I have used these coils for over a year and was astonishingly happy with them, the company then changed them the original ones became unavailable and the new ones rolled out I can state very clearly that the newer versions are cheap crap held side by side you can easily see the difference and the worst part for the vaper and best part for the company is that they wear out 3 or 4 times faster than the original version its one thing to make a bad product its another completely to have a great product and then redesign it so you force people to buy more of them. this is not dash vapes fault by any means they are great but I've no respect for geekvape anymore the new version is clearly cheap as F and it started bleeding fluid in a couple days the old ones lasted SO much longer SO much longer!!!