I guess I would say 3, with hesitation. So I'd like to explain. All together I WAS a 1 pack a day, 20 yr smoking. About 10 yrs ago I tried to quit. I tried the patches and eventually quit for 5 months, then went back. Then about 7 yrs ago, I quit cold turkey for 1 month. Then a few months later I tried Chantix and quit for 2 months and went back. Another year or so later I tried the electric cig-a-likes and almost quit. About 3 yrs ago I used the patch and gum and quit for about 2 months ago. Now up to June 21, 2014. My boyfriend said he was done and we went and bought the "A Clean Cigarette" he stopped that day, I quit the 27th and I could tell it wasn't stopping the cravings and it was very hard but I still didn't smoke an analog, although I wanted to. On September 13th, my son's 18th bday he told me that he smokes some, but he vapes too. I made him tell me all about it and went to the local B&M and bought a set-up. Ever since then I am satisfied. I don't want an analog anymore. If it weren't for vaping I'm sure I'd be back to smoking. I currently use an Evod for work, cuz it's small but when I'm out of work I use an Epower V3 3400mah battery and an Aspire VW 1100mah battery. How this helps!