I'd actually suggest taking a look at the Anyvape CVI (can only be found here: Anyvape CVI Ecig Mod APV). Gotvapes is getting it soon, and there is a co-op going on for it now.
It's got the VV/VW that you're looking for, as well as the oled screen, 3-15w, and has a 4 amp limit to it. No one has...