For whatever it's worth, I've had a Kobo aura one for about 6-7 years and it still works beautifully
I’ve had an Aura One for about the same amount of time, and yeah, it’s been no trouble at all. Love that it functions like a USB thumb drive and can take plain old ePubs without having to mess around with Calibre (which is powerful, don’t get me wrong, but that UI/UX… yeesh).