I have been thinking about buying a VV mod for some time and am seriously considering a Provari. I have read some of the threads here both good and bad and am not too concerned about the bad ones since it seems that the folks at provape are good to deal with. I am wondering if some of the provari users here could tell me if they notice much of a difference in the vaping performance from when the batteries are fully charged to when they get closer to being drained. On a lot of units I have noticed that I notice a considerable difference from the full charge point to the about half use point of the battery. I suspect that the boost circuitry in the provari would compensate and keep the vape consistent but thought I would ask some experienced users. Thanks for your help.