Samsung black&white laser multifunction at home... SCX-4623FW (not sold anymore, but samsung's product page is
http://www.samsung.com/us/support/supportOwnersProduct.do?prd_mdl_name=SCX-4623FW )
Love it. I think it was $150 at
Micro Center a couple years back, on clearance. I have it attached to our home network via WiFi with encryption, once in a blue moon it flakes out (we don't use it that often anyhow) and I have to power off/power it back on, but most of the time it reliably scans & prints over the network on demand. It has an ADF (auto document feeder for scanning) which works well, and the paper tray only takes Letter size (8.5x11") but it has a manual feed in the front that works well.
Has fax features too, never used them. Had it hooked up to our phone line for kicks and once in a while it'd try to auto-answer an incoming call like it thought a fax was coming in. I thought I'd set it up not to do that, but it annoyed my wife a few times so I disconnected its phone wire. Probably best to keep it on a dedicated fax line or plug it up once in a while (if you need it for that at all).
At work we have a gadzillion different types, I've never paid much attention to the models, they just kinda work...