Overall pretty happy. The instructions were a bit vague and I poured the liquid in the wrong end, meant to go down the mouth piece end. The vaping is good and helps not smoking in the house or anywhere else you can't smoke. However the vapour does have a heavy kind of oily feel in the mouth that I don't like. It also makes me cough which smoke doesn't . Strange . The device itself feels nice and works great. Good battery life, time will tell on reliability.