I recently replaced my very old Epson 2200 printer with the Canon Pro9500 II. Though my iPF6100 does most of the "heavy lifting" (while my Epson 4000 basically gathers dust), I found the occasional need to print on smaller papers than Letter (such as the Museo Artist cards). I have to say, the driver interface is a bit clunky, and it's a little frustrating at times because any "Fine Art Paper" requires ridiculously huge margins, so you have to fool it by telling it you are printing Photo Matte Paper. All that said, I discovered a very neat little program on Canon's web site. If you own almost any kind of spectrophotometer, you can create a custom paper profile with a nice streamlined profile utility for the 9500. Though I own i1, it's a little quicker producing profiles with the Canon utility. In my case, I hated the canned profile for the Art Card paper from Museo, so I quickly created my own. It was really quite good and, considering my prints were to be B&W, very neutral (which was always the bane of my existence with Epson).
Now, if only they'd create a similar utility for the 6100.
Nemo