Brother laser, any model. Make sure it's not just b&w though I guess, mine is, which I don't care for mine but you listed it as a requirement.
No matter what, "bimonthly print job" means you need a laser printer, brother or not. Ink'll dry between prints, toner never will, and it lasts longer in general.
"Linux" suggests you should make it a Brother though. They work great on linux.