I consider myself a "Protank building expert" (seriously, I have 19 of the damn things including eVods and knock-offs) I've built them every way imaginable trying to get the best flavor, vapor, power, longevity, etc. I've got builds that'll work great on a low power Ego, and I've got builds that'll chain vape at 20 watts! but I haven't used one of the damn things since I got my Foggers going. When I used KFs and Gennys I didn't mind the slight step down to my Protanks. But to go from the Fogger down to the Protank is just too much of a downgrade for me now. I still use my Gennys just because they're some really cool looking tanks, and they hit pretty good. But the PTs and KFs are collecting dust.