Summary: Between 1995 and 2005 I bought a lot of ever-bigger HP printers in a tech (software) startup as the company grew from 10 to over 300 people, before being acquired. I've been away from that sort of purchasing and that environment for 10 years now, using high-end color print/scan/fax/copy behemoths, so was very pleasantly surprised by this printer, which is smaller, and both wakes up and prints far faster than its ancestors 10-20 years ago.
Summary: I love this printer. High quality black and white. Prints duplex and prints fast. Great printer for a lower price. Regular toner cartridge (80A) lasts a while and you have the option of getting a high output (80X) cartridge as well if you choose to do so.
Summary: My 15 year old HP LJ1100 was still running like a champ... but technology advances made it long in tooth if still bulletproof. So I picked up the M401dne. Has paper tray, duplexing, USB, and Ethernet... bonus!.. M401dne works great. I fully expect to replace it in 2030... edit: No USB port on this unit.