Another vote for HP. My M277 dw does about 20,000 copies a year, immaculately. Uses non-OEM toner carts (at about £50 a set as against the OEM £60 a cartridge) Two-sided printing, but not scanning, as As56 says.
Looking on t'internet, today's equivalent seems to be the 283 which is going here and there for £250 - 300.