I've been using them for a week now. I have cut my smoking down to 1/2. I ordered the "Blu" ones and I'm waiting for new cartridges to come in. I made a mistake when ordering and got the starter kit, with 5 flavored cartridges, instead of just the classic tobacco. I tried one of them in the mall, they will let you try it to see how it works and what it's like. I'm not sure if I would like the ones from the mall better. I'm going to continue using these, since I will have 2 cartons of the cartridges, but if I'm still not 100% satisfied with them, I may try the ones at the mall. They see