I recently bought a C5800 printer from OKI and in my opinion it is some of the best money I have spent in a long time. It is quick to start printing and fast when it gets going. I love the print quality it produces with vivid colours and rich blacks. It has a number of other features too which I was missing off of my last laser printer, the main one being jam recovery; in the unlikely event that the printer does jam once the paper has been removed the printed reprints the page that got stuck - gone are the days of worrying about there being a page missing in the middle of your document.
The costs of running this printer are also very reasonable. The fact that each part has a longer than average working life means that you are not forever replacing drums and fusers. The cycle of the toners means that they make for very cost effective printing.
I have recently printed over 5000 pages in one go to produce documents for a client and the first page was just as good as the last.