I have been using an e-cig for 10 months now...I started out buying the nicotine "smoke juice" at three different levels, low, medium, and high. I started on the high, and then went to the medium, then the low nicotine, now I make my own "smoke juice". It is simple and I control what goes in my body. I use vegetable glycerin which is used in cake decorating. A bit of flavor from a vanilla bean and a dash of vodka for that nicotine style kick. No nicotine..none.
I LOVED smoking, really enjoyed it, but wanted something not as bad for me...