The 5 cartridges for Canon are very cheap and therefore I have decided to buy. So far, all cartridges have worked. Can unfortunately only speak of a sentence because I do not intend to test all through, because they are sealed, keeping super long and would thus probably dry out over time. Which is a shame and where you can see the vast difference in quality is not necessarily the focus, or print quality, but the ink is absolutely no UV Resistant and the black fade very, very, very fast when the sun falls on it. That is who wants to print a lot of photos and glossy paper used for ... With these cartridges you can forget the ... Otherwise everything was great and highly recommended for normal prints. You have to make concessions, but this is also perfectly ok at this price support.