Prusa Mini. My 5yo prints on it pretty much daily (stuff I have pre-sliced and loaded on the memory stick). I haven't had to do any maintenance other than chang

Prusa Mini. My 5yo prints on it pretty much daily (stuff I have pre-sliced and loaded on the memory stick). I haven't had to do any maintenance other than changing spools in about 3 months. Like all 3d printers they're still fiddly, finicky things in general. There's been a few times where I've needed to spend an hour fettling. But I've owned 3 printers before this and I would say the reliability improvement is at least an order of magnitude in terms of mtbf (where f = fiddling). I have 3 minis now, 1 with 0.25 nozzle loaded with flex, 1 0.25 nozzle (petg/pla) for decorative/hires and 1 0.4 nozzle (petg/pla) for fast, functional prints. This has mostly eliminated the setup time and calibration required for different "job types". I couldn't have done this before because just keeping 1 "less reliable" printer working exceeded the free time I was willing to spend on printer maintenance.