I have two of the first versions of the Buzz and both failed in less than 6 months. They were repaired under warranty. The little tiny screw adjustor for the voltage was a pain in the ..... The ProVari I am sure spawned more innovation to try and compete with it. I change my ProVari batteries 2-3 times per day but the vape is consistent and my atties don't blow like they did with the Buzz and Silver Bullet when using 2 rcr123 batteries. It's great that the pace of innovation is pretty fast in the world of mods. The ProVari has been my best mod so far but I am sure there will be more to come and maybe a ProVari II after the demand slows. Battery life is the only thing I would change. Maybe I should get the extended cap.
Definetly get the extended cap! I vape mine all day on one battery with no problems and I vape almost non-stop...LOL!
I throw the battery on the charger at night, but not because it needs to be charged already, just easier for me to charge it at night.