I took a LaserJet 4050 (introduced 1997, I think ours might have been made in 1999) out of service (active, networked office use) just a couple of years ago. Not because it stopped working, because it still printed like nobody's business, but just because it was surplus to requirements.
I believe this was just about the last generation of LaserJet that was Actually Good.
I also just remembered, these things had option slots. Which I had to use on my III, because I needed more memory to print many kinds of documents / images (I vaguely remember it may have been for printing from AutoCAD). Can't remember a modern printer having add-on circuit boards these days.