For the last month, since I bought the VV battery, I am using NEO with 3.7 and 4.2 Volts.
It performs great, better than expected. Higher volts give a sweeter, warmer vapor and it is much easier on draw, really easy, just like breathing!
I believe the outcome and the satisfaction also has to do with the
e-liquid someone is using - there are
e-liquids that taste better on 4.2 volts and others that are better on 3.2. I was able to find my sweet spot in liquids I wasn't very fond of when using them in NEO on 4.2 volts and now they have become my favorites!
In an occasion or two, I got this burned taste from NEO when using it on 4.2 volts with PG liquids, this was gone when I switched to 3.2. I never have burned taste when I use VG on all variable volts, even on 4.2
I know that a friend of mine is using his NEO on 4.7 volts with his
mod. He really loves it and I keep insisting to him that he will burn his puro but up to now, he is doing fine and he is very happy with the vapor production and the flavor he is getting.