Review on Canon CLI-251XL Multi-Pack with 3 Colors | Compatible with MG6320, iP7220, MG5420, MX922, MX722, MG7120, MG6420, MG5520, iX6820, iP8720, MG7520, MG6620, MG5620 by Matt Sirmons

And they don't last very long. Even when you're not using the printer, you can keep the ink heads clean by squeezing out some of the ink that gets into the reservoir inside the cartridge and is wasted. The entire inkjet printer industry is pretty much the same regardless of make or model. Of course you can find ink cartridges from other manufacturers that work great but cost about 10 times less than brand name ink. So if you don't have to use this inkjet printer all the time, your ink will just be wasted.