Summary: The printer often stalls when cued to print. The interim solution is to re-boot both the computer and printer. Samsung technical support hasn't been able to resolve the problem. Also, don't be lured by a reasonable price - the OEM toner/drum cartridge costs as much as the printer and Amazon does not recommend the high yield cartridge.
Summary: This printer is fast, easy to use, and it has a nice feature set. Toner use is on par with other laser printers I've used - no matter what brand, you're not going to get the yield advertised on the cartridge. Using this printer on toner save mode around 40% of the time, I get around 3000 sheets from a 10,000 sheet cartridge. Print quality was great at first but deteriorated quickly.
Summary: Does a nice 2-sided printing job and little problem.. EXCEPT.. Like a number of other printers by Samsung, the PAPER will not LOAD after about 2 years (if you are lucky). This is because the rubber on the inner roller has worn down. Samsung says nothing about this in its manual or on the website, which is inexcusable to not tell folks that this is part of maintenance. You will have to open the unit and replace, or turn the band inside out and get more use out of it...
Summary: I'm pleased with the print quality and speed but am finding the printer to be very, very expensive to operate. Even with Samsung's Toner Saver feature turned on, we (a small business) are only getting approximately 5,500 mostly text pages from a 10,000 page cartridge. At first, I thought that we'd been shipped the 4,000 page cartridge by mistake. However, I called Samsung, and they said that such low yields are not uncommon for this printer.