I've tried a few of the electronic cigarettes and this one is by far the best. The atomizer is included with the cartridge so when you change a cartridge you are getting a new atomizer. I haven't smoked a cigarette since I started using this one (Sept 09)! Occasionally I miss having a real cigarette, but the urge passes and I really haven't missed smoking at all. If you are trying to quite and the other nicotine substitutes aren't working for you, give this a try. It has worked very well for me and a few of my friends as well.