I bought this pack there a year, I just recommend one. The cartridges work very well on a HP deskjet 3520, I had one concern with yet full black cartridge whose ink could not quite well to the print head 10 and after cleaning heads (it worked 4 or 5 pages after each cleaning) I ended up changing the black cartridge and no problems since. Very acceptable at this price. Note that I finally used the high capacity black cartridges exactly the same speed as the three colors so I have two black cartridges on the arms. Compatible prize but good. So I recommend you and recommend me a lot in the process.
