Is anyone using a Precise Simplicity 18500 with a 18350 batt + Crown? I ordered a PS 18350 last week but I'm considering changing my order to give this little gadget a try. I would also pick up some 18500 batts to see how I enjoy the extra batt life. Really I just want as small as possible mod with decent batt life. With my current, and only, unit (Zen2 CT 18350) it takes 2 1/2 18350s to vape less than 3mls of juice! Not really interested in the kiklet because of its length/expense.