I really wonder about that too... I think if you're starting out, you need to remember that your lungs/throat/overall disposition is going to be *totally* different starting out than say, week 3. If I had to use ONLY my sub-ohm kit to quit, I would have failed. Mainly because, even at the correct nic level, the wattage was WAY too high for my smoker's throat (that said, some folks DO sub-ohm at low wattage, I don't have that magical ability, though I am finding the longer I stay quit 10 days now!) everything's easier, and I can vape a sub-ohm tank more easily and at less watts but still LOTS of watts compared to my other tank. I don't love to do it, but I CAN. At the start the heat of the vapor and the amount of it felt almost as toxic as *smoking* which wasn't really an incentive for me to vape.... I am very happy someone here suggested a 1.8 coil at low watts on a Nautilus 2 tank. It's working very well.... I don't use my sub-ohm tank frequently.... It's kind of more of a backup for now until I can afford more gear.
Anna