not a big fan since in reality the "VV" range appears to only be from "original eGo" 3.2 up to "unregulated Riva" 3.7
if i could increase it past what my Rivas already do then i'd be enthused, but all the one i have really does is allow me to dial it down to the unsatisfactory level of my old regulated fat batts if i should so desire for some god knows what reason.