I've been using mine all day in single 18350 mode and I like it. It seems to be dead on to my Ego twist when in Vrms mode. It is quite a beast in Vavg mode, just like you would imagine. My voltage load tester will be here either Saturday or Monday, so I will get to play with that soon and make some graphs.
My only gripe is that in Vrms setting in the watt mode it pulses really bad. Like 1/4sec on 1/4 sec off. It's really weird. It doesn't do it in any other setting, including Voltage mode in Vrms setting. Vrms watt mode is the only reason this thing was supposed to be better than the Zmax V1. It still vapes fine