I have used another company that also does compatible inks for quite some time However a lately I have to keep doing an inkjet clean nearly once a week.even when printing half way through the run the jets get blocked, wasting paper and ink. When it came to pre-order I also noticed that there was not much difference in price from Canon inks to theirs. So looked on Amazon and found these guys. Ordered ink, very cheap price and although not next day delivery (not surprised due to their price point) it was sent 48 hours. Which was fine. Stuck the ink in. Machine displayed 'canon ink' which was brilliant. Printed out as it should.