While the Provari is a fine device, they haven't kept up with the changes in the industry well. They do benefit from a cult following. A Provari has three issues that they have chosen not to address. First and worse, they use pulse width modulation for voltage control. There is mounting evidence that this is a poor way to manage voltage level. Here is how it works...
Let's say that you want to dim the lights in your room. If you use pulse width modulation, you quickly switch the lights on and off repeatedly, leaving them on long enough so that the 'average' brightness is around what you were looking for while they are flickering.
With straight DC output, it is like a dimmer switch, you simply cut down the voltage until the lights are at the brightness that you want. Making them run consistently at the voltage you set with the switch.
Using a coil with pulse width modulation makes it heat up and cool down quickly. If you get a cheaper device (anything with a max in it, Zmax, for example) you can actually hear this. It is called the 'rattlesnake' sound. Provari does use a faster modulation than the 'max' chips do, 100Hz rather than 33Hz, three times faster, but it is the same method. There is talk that some of the issues that people have with atomizers is due to the effects of pulse width modulation.
Second, the Provari does not let you adjust by power (watts), only volts. Many will tell you that it really makes no difference, since you have to adjust both to the 'sweet spot' of the atomizer or juice you are using. I disagree. I use cartotanks almost exclusively and they have different resistances. I use am iTaste MVP 2 and an eVic (straight DC output devices, not PWM) and I run all my atomizers and juices at 8 watts. No matter which cartotank I run, they always get the 8 watts that I set them to. The devices adjust the voltage to suit the different atomizer automatically. No fiddling. Consistent vape.
Finally, no ego threading without an adapter. Really? Given the huge number of devices that use ego threading, you tell customers "buy an adapter". For what you charge? <shakes head slowly>
Reality is that the Provari has a long, cherished reputation. It is a perfectly good device. But for far less money, there are other, better devices out there. Oh, I forgot, you will hear "well, you haven't tried one...". Yeah, I have. They are fine, U.S.A. made, reliable. Did you keep your old 'brick' cell phone? No? Why not? Reliable, does the job. Oh? You wanted the newer features. Yeah, me too.
Just my two cents. Hope this helps. Good luck and have fun!
