Summary: I just go my printer today, replacing my old Canon S600. I am a huge Canon fan and love my old printer. I just bought a Canon Rebel XTI and was really excited to see the iP6600 print up a clear photo quality print. Well to my surpise it did not, I saw the picture and it has a grainy effect to them.
Summary: This printer does a nice job and prints out very good photos, but, if you alter or enhance your photos with photoshop and then try to save them to disk and print then it will not work. You must only be able to do your editing in the printer, not a convenient way to do editing.
Summary: The print quality of the Pixma is fine--I have no complaints. But the reason I downrated this model is because the manufacturer has gone to extreme lengths to prevent the user from using any inks other than their own. My previous Canon, i960, allowed the use of generic inks.