i have looked at lots over the last 3 weeks including the lava tube in diffrent versions by l Ryder volcano young june and plenty of other Chinese copies ect ect and came across a hole new world to what was out there i.e provari versions appolo versions smoktech zmax versions ego t style versions and i have come to a conclusion myself that the best one for me would be the smok tech zmax v2 with looking at the reviews and results from the device and what it has to offer for the price just joined and thort you might be able to help if i am doing the right thing or not hope you can help and thanks for you time