The BB9 is the best upgrade from the regular M for cooling and better flavor as well. Sadly i broke mine just a day after it arrived when i cleaned it in the tube it came with, the cap just flew off when i shake it 😂. Broke my heart so much but yeah, the vapor is so cool with or without using your water pipe glass piece.
I have just received my pink BB9 and its truly a marvelous creation to complement the dynavap. The vape is cooler and easy on the inhale, to top it off it cools down faster for the next heating. Truly a genius device.