I smoked for 26 years. Three months ago I started using e-cigeretts. I started using a 901 recargable with cartomizers and suplementing with disposables. I use 12mg e-juice to refill my cartomizers. The only drawback is that the batteries did not last long enough. I have recently switched to a mod with rechargable battery which last all day. I have quit smoking completely. I have tried previously to stop smoking two other times basically cold turkey. I now breath easier, My sense of taste and smell has improved. My over all health I believe has improved.