Brother HL-L5210DW
Brother
Pro pickMono laser, duplex, 48 ppm, 250-sheet tray, wired + Wi-Fi.
The workhorse. Genuinely fast on 120-page runs, cheap high-yield toner (TN760/TN850 class), and it does not choke on 28 lb stock. If you print scripts weekly this is the one to buy once.
Brother HL-L2460DW
Brother
Compact mono laser with duplex.
Same reliability in a smaller, cheaper body for writers printing a few scripts a month. Duplex matters: two-sided drafts halve your paper cost.
Mono laser, 42 ppm, duplex, ethernet.
The other machine you find in production offices. Slightly pricier consumables than Brother, but rock solid page handling and great drivers on Mac.
Brother TN760 / TN850 high-yield toner
Brother
High-yield replacement toner.
Always buy high-yield. Cost per page drops by roughly half against the starter cartridge, and a script eats pages.