I'm what I consider a light smoker. About 5 - 10 parliment ultra lights a day. I want to get into e-smoking with the hopes of quitting real cigs all together. So my question is what model should I buy. I would like to purchase from puresmoker.com since they are in the US and seem to get good reviews for customer service and fast shipping. They have 4 or so models so what does everybody recommend?