I used to have one, and loved it, but the heating element died on me. I replaced it with a Vapor Warez which is almost identical but with a better heating element and a seperate on/off switch. I always had the knob on my Vapor Brothers set at about 1 o'clock. I heard, however, that they're pretty much all different so my 1 o'clock could be your 12 o'clock and somebody else's 2 o'clock. Just play around with it and see what works for you.