I wrote the following blog on the Provari. It has detailed information on its construction and features. It also has about a dozen links to previous threads on why the Provari is special and stands out from the competition according to owners.
My father was a self-employed carpenter. He depended heavily upon his tools of the trade. He spent more for professional, durable, and dependable quality tools, because he couldn't afford to have a tool break down which would hamper his occupation.
I equate the Provari to the above tools. It will be the most dependable, reliable, durable variable voltage
mod that you can find anywhere. The manufacturer provides a long warranty and will continue to service the Provari for life.
Many of us veteran vapers have had mixed results with the Chinese made
mods. They are made cheap to sell cheap, and should they break you are expected to buy another cheap
mod from them. Well, some of us get tired of this and decided to bite the bullet and buy a Provari. Most say they wish they had bought a Provari to begin with.
You can buy Harbor Freight type of tools and probably get by if you are a weekend DIY. However, if you are a serious vaper in this for the long term, you'll find it difficult to find a more appropriate "tool" than a Provari.
You may need to own and use one before you can truly appreciate what a Provari offers
AMEN TO THAT BROTHER!!!