It's a reliable device built well and does what it says it does but with a hefty price tag. The other examples of such mods that come to mind are the Reo and the Precise. There is a ton of options depending on if you want VV, VW, Mechanical, Bottom Feeder, Etc. It really just comes down to your preferred method of delivery, what kind of burner you want to use, and your budget. The biggest advantage to getting a mod is being able to use non proprietary batteries and delivery systems, these not only perform better but last long and are much cheaper in the long run.
I will always be a Reo first guy because I love bottom feeders, but then again I have a Provari as well for constant voltage delivery and I will be getting both a Mechanical mod with an RBA and VW device (when a quality one comes out) for around the house.
I guess the real question is: Are you willing to pay 3-5x more for a quality built American PV or are you in the boat that you would rather buy 3-5 similar Chinese made mods. I always go for quality, my wife always goes for cheap so its different for each person.