The original HO cartridges are expensive but work the best and last the longest. I've tried off brand and they were not as easy to install and didn't last long at all. I also didn't think that the quality of the prints were as good as the original HP cartridges provide.
This is required product for printing with my newly-acquired HP86000. I have no major complaints with either printer or cartridge. Miss some printer capabilities which were present with my HP85000 but no big deal am learning to adjust. Nevertheless appear to be getting more output with new printer--don't know if it is cartridge size or printer itself. Installation of cartridges into new printer is more manageable and much easier than into old printer. Would recommend HP cartridges