I only bought these because I had to for work. In fact I didn't even pay for them but we needed them so my job paid for them. I was surprised by the amount of printing and continued printing I can do with these cartridges. I purchased them in October and I am still printing documents as well as pictures. The XL must have something to do with it but I am not really for sure. With that being said they do provide great color and are actually a good deal if you need them for work. Overall I say its a good purchase.
I have used the HP 950 XL Printer Cartridges in a number of HP printers I have used over the past few years and have always been quite satisfied with their performance. The colors have always been sharp and there is never a bleeding or running problem experienced with some of the lesser quality ink cartridges. There is generous amount of ink supply in the cartridges which makes them a great value of some of the "bargain priced" ones. Installation is foolproof and the HP 950XL 951 cartridges resist high humidity and dust conditions. I also like the fast drying of the HP 950XL 951 ink cartridges too.
I just purchased a new HP 8620 printer at Staples. I'm very pleased with my purchase and this is the ink required. My experience so far is that it provides excellent color consistency and reality to the original.