Rich, the first laser printer I bought was the Okidata OL-400... added some RAM to put it to 1 (or maybe two, I forget) and gave it to Goodwill a couple of years ago. GREAT printer. The problem I have is that my wife is a Mac graphic artist, so I have to have postscript functionality and mac compatibility, which most peripherals just don't care about. At $582 shipped (www.upgradesource.com), this printer has duplexing, postscript level 3, network card (including wireless if desired), 4 seperate toner cartridges (which I think all lasers have anyway), and what seemed to be the lowest cost per page.
At $600, it's disposable. Heck, the toner in the thing is worth about $400 by itself.