I also own a couple of Brother black and white laser printers. They are quite durable and cheap to operate. Way way way better than any inkjet.

The only complaint I have is that after a large number of pages the printer will insist that the toner cartridge needs to be replaced and will just stop printing, even if the printer output darkness is still acceptable. Quite annoying if you need to print urgently! Fortunately I found a youtube video with a work-around you can enter into the UI on the printer.