A big concern with potential buyers of the iPF5000 is the head replacement issue. The very nice technology that remaps clogged nozzles is the same technology that some of us fear might cause the heads to eventually run out of clear nozzles.
We won't know if this is an issue until these printers have been out for a year or more, but the recommendation of $1200 annual print head replacement pushes this printer out of the running for me. And, if the heads run out of clear nozzles after only 4 months I would have no written warranty, which makes me feel as if Canon is daring me to buy this printer. Otherwise, the iPF5000 sounds like a great printer, albeit too large for my workspace.