Hello.i just ordered another sigelei zmax v2. The price is great. Yes they crap out with in a year a lot cuz the computer chip gets detatched. But where I get mine from he has a repair for them and can fix and make better than original. Now. I know provari is great and reliable.i know I should get one. I've been vaping 5yrs and have a few great mods. My question is this. Performance wise to those that have both these units. Do u think there is much of a difference? By the way my favorite is still my silver bullet at 6v after all these years
and yes. It still works like new!