This is actually what confuses me also, but this thread is making a lot of sense to me already. I thought I fall under a moderate to heavy vaper, but it turns out based on the others feedback that I am more of a Very Light Vaper since I consume 10ml (6mg nicotine) in a week.
Now that you mentioned settings, I consume my 10ml per week using 1.8 to 2.0 ohms @ 8-9 watts on a genesis tank.