Just put the aero base on my PT2 and it makes all the difference in the world. Its worth the $9 bucks.
I'll second what TDC123 said. I just got an aerotank and decided to see what other tanks the airflow controller fit on. It fits on my PT3 Mini. It also fit on my Evod Glass--but the depth at which the coil sits in the base leaved a large gap between the coil head and the pipe through which one sucks the vapor (is there a technical term for this part?) Bear in mind that if you do use the airflow controller on a mini, you will be utilizing 510 threading instead of the Ego threading.