Samsung CLP-315 for the heavy lifting high-volume print jobs, and an HP OfficeJet 6500 Wireless for scan/fax/quick print/photo duty. The HP has the optional duplexer for double-sided printing.
The HP cartridges are outrageous and chipped so they're not refillable AFAIK. The Samsung has individual color and black toner cartridges that are very reasonable and really run until they're empty.
Both printers, a full refill on the toner or ink will cost almost as much as replacing the whole printer though.
Went with HP because their scanning software works on Macs flawlessly over WiFi including sheet feeder and conversion to just about any file type including PDF during the scan. Also has a built in web server that can do single sheet scanning to JPG for any machine with a browser without having any drivers loaded.
Haven't really needed to fax in years and with VoIP phone at home for years now, and since last week, the Verizon doohickus that hooks the home phone to their cellular network-- it typically won't/can't work by design anyway, due to bandwidth/CODEC constraints. I just scan/e-mail things that would have been faxed in the past.
Both have been workhorses for years. My wife is a nursing administrator and active nurse who prints a ton of stuff and she's got no complaints either.
Prior to the Samsung CLP-315, had a Samsung ML-1710 which was B&W only and it's still chugging away at dad's house. Only complaint on that printer was the fuser drew a lot of current. It'd dim/flicker the lights when it came out of sleep mode at the beginning of a print cycle.
Before all of this, I was an Epson fan, all the way back to the dot-matrix days. Their ink has a tendency to dry out and clog heads though. Some photographers still swear by their ink.
Loudest and best printer for text quality ever was the Star brand daisy-wheel printer. Basically a screaming fast typewriter. With a nice font daisy-wheel inserted into it, the resulting "typed" pages were great. A poor-man's impact printing press. Many a club newsletter and school report hammered through that thing. Freakin' teletype machine on steroids.
The world knew you were printing something back then!! Couldn't print after 10PM without bothering the neighbors.