There is no way to force the business models to keep printing on a full cartridge that has met its page limit(per reviews on Amazon), and the salesman at a store told me brothers have replaceable parts in them now besides the toner carts that they force you to replace.
This is why I love Brother printers: I've never had to touch their software. Ever. Been buying their printers for over a decade. You pipe postscript to them on port 9100, they print it. Done. Their software could be 100% refined APT-malware, and I'm totally okay with that.
They often are not any more, at least on the software side.
Also, of course, if you need to produce really great colors (think 6-color inkjets), or really large printouts (say 3' wide), your choice is narrower.