I just wanted to express my opinion on the Subox after using it for a few days for anyone thinking about getting it. It is constructed really well IMO, works great, and looks great. But if you are looking for a tank with a real nice tight draw, I don't think the Subox tank is for you. Even at the the smallest airflow setting I find it too airy.
I like the fully adjustable airflow from no air to full air and everything in between not just three settings on my eGo One tank much better. I am going to use the eGo One tank and Subox bottom portion (mod?) all day today and see how that goes.
Try setting the Air Flow to the Lowest Setting, 1 hole each side, and then put a Wooden Toothpick in one of the Holes.