I own the Provari, the 20w and the seven 22, as Gonzi said they are different animals, different size, different power, different price, different quality.
SO I use the seven 22 at home, the performance in terms of power is far better than the provary, hands down, yo can go to 22 watts, the battery lasts longer, and I can use my .7 ohm builds without breaking a sweat. Now the seven 22 is too bulky to take with me on a regular basis, so when going out or traveling I take my provari with 1.2 ohms or above builds.
In terms of durability, time will tell, I am sure I can smash the PV with the 7-22 but I'll have a hard time doing the opposite
