My Provari is only a couple of weeks old and was a V2 from the start. I agree that the Provari is rock solid. When you set a voltage, it outs out exactly what is displayed. I've tried 2 ohm and 3 ohm cartos set, for instance, on 4 volts. When I screw in my inline DVM, I get 3.99volts to 4.0 volts with either carto installed. You can't ask for much better than that.
The Provari is definitely the Mercedes of ecigs. The price is high, but you get all stainless steel construction and stateside service if it breaks. As long as service is available, I will be
vaping the V2 for years to come. I couldn't ask for anything better. Every
vape is the same as the last, even when the battery warning is about to flash. The voltage regulation is superb.