I don't know about anything mech or vv that has a reputation for lasting longer than Provari. I don't doubt that nerves of the vaping future has fueled sales of mech's and rba's for awhile now. But mech's can fail, strip threads, button issues, etc and a lot that I've read about need tinkering with to get them working right (ugh). I figure if my Provari bites the dust, I'll have the components to make a mech and they can't outlaw flashlights. Even an Altoids tin with a couple of AA batteries works. I can't believe legislators are stupid enough to think they can stop garage modders.