I've been printing with iPFs very happily since the 5000 first came out (first a 5000, now a 6100). Great printers, great reliability (never seen a clogged iPF), great price-performance. The only disadvantage to them that I've found is that you pretty much have to roll your own profiles for a lot of papers - they are (for whatever reason) less popular than the Epsons, and fewer paper manufacturers include iPF profiles in their standard offerings (the 5000 may not have had the unit-to-unit consistency to make canned profiles as practical, but the 6100 with its built-in calibration routines DOES). I wonder whether Canon plans to stay in the fine-art printer market, and, if so, what their next move will be? The 6100 is an easy match for an Epson x880 class printer, with some better gamut in certain places - oh, those Canon blues (with a dedicated blue ink in addition to two cyans, while all Epsons use variations on cyan). Will they release a printer in the 14-15 ink range (keeping all 12 existing inks, adding orange and who knows what else - light yellow? gloss optimizer? a third gray - various odd inksets have used black plus THREE grays?)? Will they improve the yellow, red and two magenta inks to get warm tones as good as (or better than) the Epson 7900 and 9900 while keeping their existing mastery of cool tones? From what little I've seen of the newest Epsons (x900 series), the current iPFx100 is at least a match for them in the cool tones (blues and greens), while the (much newer) Epsons pull a bit ahead in the reds and yellows. I'd love to see what Canon does next, as I may be in the market for a printer in the 44-inch class in the next year, and would be strongly inclined to another Canon, especially if I got even more image quality along with my additional carriage width...
-Dan