Regarding the actual cartridges ... I have no reviews yet. I only come to replace the original kit IP 4600 printer. A priori, the surprise is that the level of the cyan cartridge is supported by the "ink level" software = full software compatibility, at least ... (cartridge appears "full "on the PC screen ...) It was one of my concerns! With these stories of chips ... Furthermore, the kit is not too expensive. To my knowledge, one of the best markets if not THE CHEAPEST. However ... with the seller, I must deplore delivery times to no end! Well, it is not necessarily very serious if one can anticipate. But compared to what is announced ... I noticed almost double the time. MUST KNOW. Remains that given the price ... it's still interesting. Now that I am "aware" I order another advance!