I was a loyal HP customer for 12 years. My old printer from 1998 was getting long in the tooth, but still working great. However, I wanted a printer that would have wireless capability, print photos better, and would allow me to scan. So I bought a Photosmart Plus, which takes this ink. This ink is truly horrible. The estimates of how long it will last are WAY off. I don't print very much and I'm already on my 4th cartridge, one of which was an "XL" and supposed to last through 800 sheets. LOL!! I'm getting NOWHERE NEAR the estimated 250 sheets per regular and 800 sheets per XL cartridge. Not even close. Around the time I bought the printer I bought a ream of 750 sheets of paper which still isn't half gone. I have printed a few photos, but I was having errors when printing photos for a long time, so I have printed less than 20 4x6 photos the entire time I've owned the printer. In all honesty, it's probably cheaper to have photos professionally printed than to pay for this ink to print them! This ink is an insulting scam, not to mention an environmental nightmare. I really hope a competitor comes forward that can make great printers and efficient ink cartridges that aren't designed to be as wasteful as possible. Once I find that company, I will trash my HP printer (even though it is brand new) and these horrendous ink cartridges. I would MUCH rather pay a higher price up front for a quality printer, then to constantly find myself low on ink and unable to print anything, and throwing away cartridge after cartridge just to print a few recipes, mailing labels, and google map directions.