My wife (a CPA) and I office together and share a printer which is now down for the count. My wife prints a lot, especially this time of year. I haven't bought a printer in so long I have no idea what brands to consider.
We only need black and white, and prefer a laser printer. The current but broken printer was fast, probably on the order of 30-40 ppm. We could live with less fast. Because she prints so much, toner cost is important. If we get color in the deal, that's great, but it's not even a low priority.