Ordered the 6 pack for trial. Estimated delivery between 24/07 and 03/08, received on 22/07. 3 cartridges of color change immediately recognized by the printer. Test 2 photos 21x29,7 format on 230g glossy paper (which I had already printed with the original cartridges for comparison) No difference (stitched, light, chroma) to the naked eye. Provided that the quality remains constant over time and that the black cartridges (I have not tried) are as good, this product deserves 5 stars.