there is - and I dont see anyone who brought it up yet. the pure dc voltage to the coil. it makes the vapor smoother, so while 20 watts may seem high for someone used to a vape on a zmax (or whatever) there is no spiking or pulse modulation going on making it perceived as even hotter then it would feel or taste on a mech at the same output. the flat 4 volts (or whatever) actually makes a slightly different vapor. not to say a regulated is terrible. but my drippers just dont seem to give the same kick on a regulated device.
coincidentally besides reliability and accuracy, the higher, more filtered, smooth line of the provari is what also makes it different from the others. and without all the peaks you get more of a bacon frying type sizzle and less of a "buzz" or "rattle"
believe me. if you go back a year and search my posts I was in the same boat, I argued against the idea of a flat battery to no end, I could not see it, understand it or imagine ever wanting it. then I tried it and said meh its ok, as time went by I got better at building coils and different wicks, then tried again and went wow that is bada**.
now i have on with a kayfun set to .8 ohms and some seriously fat batteries. since i cant chain vape at work i get two days before i notice the drop off. there are a couple things i havent hit the magic setup for the mechs yet so they get the provari. but from genis to drippers it is simple a different vap and defnot for everyone, especially those that arent into rebuilding and taking the time to play and tune the builds for optimal performance on the mechanical device.
Donna got a roller
pretty sweet aint it?