Monoprice has always provided very good products at much better prices. I have always been careful with the toner replacement as we had a very bad experience with an aftermarket toner cartridge once. So, I always bought the factory replacements and, of course, paid the price. I have always had good experience from Monoprice so I gave these a try. I have 5 laser printer at my office all work fine with the Monoprice cartridge. Needless to say, we have saved "plenty money" since I have gone to the Monoprice cartridge. Keep it up guys!
PROS: fits and works perfectly at a considerably better price