Hmm...I currently own a provari v2, a zmax v2, and a vamo vv/vw. In vv rms mode, my zmax and vamo are just as accurate as my provari v2, and I can actually read my vamo's screen. I agree, vw isn't needed (you do understand that when you set your voltage, your power output adjust depending on the resistance of your coil, right?) but it is a nice feature.
My biggest gripe with the provari may also be its biggest pro...it's the inflexibility it has for batteries. I like running dual 18350s, or a single 18350 if I want it smaller, or a single 18650 for longer battery life in my vamo. I understand that provari is restricting flexibility to reduce problems, and for most users that is a very good thing.
Also, lets not assume that just because something is made in China it is low quality. Anyone here own an iPhone?
All in all, I'm happy with my Provari, and it has it's place. It's definitely not the "be all and end all" device some users claim it is, but it is a solid device with great support, and it will stay in my arsenal beside my $50 vamo.
I wish they'd put a damn oled screen on it though...I mean, seriously?
Dredd