I have tried all your products - e-cigs, e-stick. and e-tank. I believe the e-tank is the best product you offer. With both the e-cig and the e-stick the battery charge seems to run out fairly quickly, and it's difficult getting a satisfying 'draw'. With the e-tank one battery charge lasts about 24 hours, and it's no trouble at all filling it up with the liquid. One fill up lasts about 12 - 14 hours. If you choose the right blend of vapour it also really produces a very satisfying 'draw'. One problem I had initially was that - because the 'battery charge' and 'a refill' lasted so long I found I was using it most of the time. Some discipline is needed in relation to how often you use the tank. I've sorted this out now and am finding that one refill bottle is lasting about four days. I would recommend this product to anyone - particularly if they're determined to give up smoking ordinary cigarettes. The e-cig and the e-stick may seem more attractive visually, but I find the e-tank easy to hold, or keep in my pocket when I go out, and just about everyone I've been with have commented that it looks just as attractive as any other e-vapour product. I think it's a real winner, and it has been invaluable in terms of helping me to stop smoking normal cigarettes.