The HP LaserJet Enterprise M604dn ($899) is a good choice as a monochrome laser printer to anchor a busy workgroup. It has a high paper capacity, solid output quality, and is built to print in volume. It adds security features, like password-protected printing from a keypad on the printer itself.
Reasonably fast; Built for high-volume printing; Good standard and optional paper capacity; Automatic duplexer for two-sided printing; Port for USB thumb drive; Password-protected printing
Running costs are on the high side