We use black and white for use with the POS. Color lasers will do the job, too. Inkjets come out wet, are far too expensive, and are too slow to operate for a POS; in my personal opinion.
Brother is the brand we have used in our shop for the past ten years, too. They're inexpensive and just keep going and going. We retired our original all-in-one brother fax/laser/copier, but it still works fine. (it's a spare now)
The entry level one is usually about $49-$79 (and almost always) on sale at office supply stores.
Example: HL2240 is $79 this week at Staples.
The all-in-one model is a bit more, and has printer, fax, scanner, auto document feeder, and flatbed copier.
Example: MFC7360N is $129 this week at Staples.
We also use (Star 100) thermal receipt printers at each workstation. $205 shipped from posworld.com Customer receipts and POS processed credit card slips go to the narrow format thermal receipt printers, while (back room) workorders, corporate invoices, and daily reports go to the laser.
Happy Shopping
Mike