I received my BB on Tuesday last week, and I have a favorite now. So far I've been vaping a standard Joye 510 atty, along with a new standard 306 atty. This little unit really packs a punch, and VV allows me to find the sweet spot for each atty, and juice. Where I use to stay away from VG juice, I now find myself in VG vaping heaven; the BB allows you to quickly find the best voltage for flavor and throat hit. I anticipated the flavor part, but not the throat hit. Previously I vaped VG juices on 5 or 6 volt mods, and never could get decent TH out of the juice at those voltages. Now I find that right at about 4.4 volts, the VG is packing a nice little punch to it!
The unit's construction is outstanding. It is durable feeling in the hand, yet so small. With a 306 and drip tip, it completely disappears in my hand.. Perfect stealth vaping unit, yet blows plumes of vapor at the turn of a dial.
I sure am glad I ordered this unit. By far, a wise and worthy investment!