Okay I previously posted it has been 2 months since my last tobacco cigarette , 40 years of smoking 1.5 packs(menthol) a day , lordy do the math ! I have been using some pretty disgusting e-cigs ( night lights ) with the screw on pre filled tips and rechargable battteries but they are so nasty and leave an oily filmin my mouth when I use them .. I have ordered some Apollo brand extreme to see if they are better .... I should have asked this before now but which unit or brand would you seasoned people suggest to avoid all the money spent on sub standard products .... as an older guy I don't really know all the tech stuff .... just want something that is clean and satisfying without all the oily film I've been experiencing if that is possible .. pocket sized .. thanks for any help !!