I strongly second the HP LaserJet 2100 (or 2200, which is nearly identical). Get one off eBay and optionally add more RAM and a JetDirect card (I forget the compatible models off hand).

You can get recycled toner for these "older" LaserJet printers at great prices. 2100/2200 uses 4096A (std capacity) or 4096X (high capacity). Find a few local toner recyclers and buy a toner from each to make sure their drums and toner work for you. I had one supplier whose cart somehow left speckles all over the page; toner was staying dusted to the drum. But in many years, that's been my only complaint.

I don't recommend current LaserJet printers just yet. Perhaps "they aren't built like they used to be", but I'll know for sure after a few months of using my new 1320 at the office. That has nearly the same specs as the 2100 but it seems less sturdy. We'll see.