Both will be compatible with OS X. I believe that the C82 might have a slight edge in photo quality but there is more to consider. Epson uses a top feed system that will fail before any bottom feed system. It also builds its heads directly into its printers, which if they fail, you will likely end up buying a new printer. If you have a head failure on the HP, simply replace the cartridge. I also believe that the HP will be cheaper per page and have better text output.