Congrats on 4 months! Love my Nanos. If you want another for backup would advise you get it now. They are getting harder to find.Small update.
Still going strong, havent touched the smokes since i got my vape, i quit the day i got it. So, atm 4 month smokefree, still going strong. Can even say i saved some money now, havent bought any new gear in a while. Engine nano is still my go to tank, and my drop rda when im in the mood for dripping.
So doing some research and buying good gear from day 1 isnt a bad idea.