Very good print quality even with toner saving preference. Unfortunately, it does not deliver what it promises. Although it is supposed to be for 2,500 pages (as x), it prints around 1,000, just like the CF279A. Also, I should note that it says CF279A on the toner and has been crossed out with a pen to CF279X. I noticed this in 4 packages. Previously, I had bought it at the same price (around €6.50) from another store and it produced over 3,000 photocopies!