I bought a Samsung ML-2151N laser printer earlier today for $549, which came with a $70 rebate.
Factory specs are:
1200dpi (600 by default)
21ppm @ 600dpi
Network card
Auto duplexing
500 sheet input tray (20lb, letter or legal size)
2 line backlit LCD
100,000 sheet monthly duty cycle
I haven't played with it too much, but I admit I'm impressed with the overall printer. It prints quickly, clearly, and effortlessly. The noise level is reasonable; actually a little quieter than the HP LaserJet 6P it replaced. The printer looks nice, not weird like some newer printers. Overall, it appears well built. Installing the print driver was easy and uneventful.
The auto duplex feature is amazing. It works quite easily and will make life easier. This is probably a feature in which we will get our money's worth. More later, once I spend some quality time with it.