Pros: Cheap
Cons: Expensive ink, slow, loud, problematic

I had this printer now for a year and I hate it. The print heads get clogged constantly. You will waste half the ink you use trying to unclog the jets. My black has two permanently clogged jets that will not clear up ever. This results in poor photos in the dark areas. Has ink monitoring that is not very accurate at all. Had a color run out, with quarter full according to the monitor.

Pros: Price is cheap, initial set-up easy, maintenance and ink status indication simple.
Cons: heads clog, canon ink cost more than prints, very slow in photo setting

I buy the 820 printer base on the enjoy received with my old Epson Stylus 777i, this was a great all-purpose printer. The 820 hasn't been a enjoy at all, clogs a lot requiring head cleaning daily, photo colors inconsistent requires multi-cleanings and head adjustments to achieve good prints. Very slow in photo setting