I fully agree about HP LJ II’s. That was my first, and probably best, laser printer. I used it for years, and then donated it to my nephew, who used it for 4 more years of college. If it hadn’t been stolen, I’m sure it would still be working for him. That thing was built like a tank (weighed like one, too) and just kept on working, time after time.
I replaced it with an HP 4p, which was indeed a piece-of-crap printer, and almost turned me off HP altogether. But now I have an HP 6P, which seems to work even better than the LJ II (though I doubt it will last a decade like that did).
I have a friend who buys HP LJ II printers whenever he can. Often gets them very cheap. Then he refurbishes them and sells them to businesses for use in dirty, dusty factory environments. They like them because they just work reliably in these locations, and when they stop, a good cleaning gets them going again. He says in many years of using HP LJ II’s he can only recall a small number that actually ‘wore out’. I can see why HP had trouble selling replacements for them!