I smoked a pack a day for over 45 years. I tried to quit analogs three years ago using e-cigs as a substitute. At that time, what was mostly available were the analog look-a-likes. They produced some vapor that quickly reduced to almost none. They were fiddley (high maintenance) and I was going through cartridges, atomizers and batteries several times a day. In the end analogs were easier to carry and use. Attempt failed. At the beginning of this year (2013) a couple of co-workers showed up using APVs, in this case, a 650mah eGo-C battery mated to a Kanger T3 clearomizer. I saw lots of vapor and it held enough juice to last the whole day at work. I decided to try e-cigs again on March 16, this time using their set up (and it was only $35). By the end of the first week, I had finished my open pack of analogs and I haven’t been back.