I smoked for 18 years and started using electronic cigs two years and a half years ago, it was a Christmas present to myself. I use the Provari and Ego C twist with a tank 3.5 ml tank system and 1.5 ohm cartos.( I started with ego 1000 mah batts and tanks.) I quit smoking after about 2 months of using these products, and have maybe smoked 5 cigs in 2 years, and those were just to see if I really had quit. I had tried to quit smoking many times cold turkey, with gum and with snuff to no avail. THESE E CIGGS SAVED MY LIFE! I am now tobacco free and can smell, taste and breathe again, and I don’t smell like an ashtray. These are convenient and easy to use, I fill my tanks twice a day and I am good to go, just pull it out of my pocket and no problems at all. plus I can smoke indoors with a few weird looks, but I just explain I am smoke free due to this device and people are cook, including police. The taste of the juices is endless and I use Backwoods Brew exclusivly, but there are probably hundreds of shops where you can get juice and supplies, all mailed to my door descretly. You can get juices in many different amounts of nicotine all the way down to no nicotine when you don’t need it anymore and just use the water vapor as your fix. I recommend this any smokers I know and recommend this anyone reading this. Thank God for E-Cigarettes!