I purchased this ink after reading about it in these forums. I have to say, my experience so far is poor.
I've never had even a minor problem with Canon ink. But everytime I print something, at least one color doesn't work. I confirm this by printing a test pattern, then I have to go through...
Based on what I read here, I decided to buy G&G ink carts from Inkgrabber.com.
To get the price break and free shipping, I ordered a 6-pack of each color.
They arrived today, and I opened one box at random. It was black, and the inside of the plastic shrinkwrap has alot of spilled ink in it...