I'm new here but have been vaping a long time. I've spent a bunch of money on different mods. They all work great for a while but then the cheap parts start to fail. It is like anything else these days, get your money and run. I suggest that you avoid all that and get a Provari. I have the mini. It is head and shoulders above the rest in quality, battery efficiency and smoothness of the draw. It is just nice not to have to worry about the consistency, it is always the same. Expensive at first but cheaper in the long run.
I'm a very hands-on DIY kind of guy. I have lots of tools; mechanical, wood working, electronics etc, etc. I've learned that, when buying tools, it is usually best to stick to the "buy once, cry once" maxim - meaning buy the best once and cry at the price or buy cheaply and cry over and over again.
But, that is not always the case. For instance, I have some cheap ratcheting clamps I bought at Harbor Freight that with a simple 15 cent modification have out lasted and out preformed high end clamps that I have costing 4-6x the price...
Nothing lasts forever, everything breaks down eventually.
I am not knocking the Provari but, at the cost of one Provari, I can get 6 Vamos. If a Provari lasted me 2 years before needing to be repaired or replaced, that means (to me) that all a Vamo would need to last is 4 months to make it an equal value to me, which I think they can easilly do.
Couple that with the rapid advancement of technology in electronic devices and you add another factor. In two years, the Provari is going to be a virtual antique. In 6 months, I can go out and buy the latest and greatest and not feel bad about buying the Vamo.
I can see your logic and reason in choosing the Provari. But, in this case, I just can't support the maxim. I bought a Vamo. This is just my opinion and my point of view of coarse - to each their own.