I don't use any hitter that has a internal batt (learned the lesson with IStick50's that work perfectly but spent internal batts inwhich render them useless within a year of use)so I may have a dozen attys in stands but only use a few mods, enough to keep my charger working almost all the time with some batts. I've had good luck with mods, my IPV2 is over 4 years old, IStick 100 is over couple years old(21000 puffs according to the ArcticFox software) and a couple DNA30 home built aluminum box mods that are a couple years also. Old sigelei Zmaxs, maybe V2or3 that I got late 2013 in a coop that that I've had boxed away cause they had loose inconsistent fire button that misfired making the menu popping up all the time. I fixed with a couple bits of electrical tape(Thanks again YouTube for giving me the tape idea working with a different hitter) on the switch on the board a few months ago regular daily usage haven't skipped a beat since I tightened up the button with my fix. Good ol provaris that soon to be 5 years, she's my only hitter I rely on every day for all these years, gonna shed a tear the day my provari quits.
I don't have a army of attys, just many many subtank minis and can build .3 nasty to 1.6 easy going builds and vape them all easily. With 2 of us vaping streamlining to have both use the same gear and most important to keep the wife happily vaping with no gear hassles and I knowing how to fix. I never really had any interest in drippers and they can be a mess.
I have a pile of NIB just put batts and vape to see if they work mods sitting in a drawer, swap out once in a while but still the older mods just keep on going. Being totally self sufficient for eons now I have forgot what vapemail is. I have enough gear and DIY to last a very long time