Greetings, Since upgrading to Mavericks, my 2 older HP printers are not performing well (very slow printing). I've tried various fixes and none seem to work so I'm looking for some recommendations for a new laser printer. I just need it to print crisp black and white in a timely manner on 8.5x11 paper and envelopes (doesn't have to be ultra fast). No need for scanner, fax, etc. I'm looking for something that is economical on the front end (purchase price) and back end (toner price). Any recommendations?