I like the Large capacity HP 950XL Black ink cartridge that I don't have to change very often even though I print a lot of text. When I print color photos the "fine" printing required for photos uses a lot of ink but these cartridges have enough capacity to print a lot before they expire. The quality of the photo prints are pretty good even though my printer is not a PhotoSmart Printer.
I've started using this ink since buying my new printer a few months back. I have been using hp's for quite some time now but this ink is by far the best. What's great is when it gets low I don't have the colors fading on the sheets or leaving streaks it prints super clear until it's totally out.
I use these printer cartridges because it's cheaper to buy the black XL along with the color ink cartridges. I use these at my office with my HP OfficeJet Pro 8100 and they work fantastic. I don't have to change the cartridges that often and the price is reasonable. I also get more printing for my money than with any other printer cartridges.