Pro-1000 is a good printer with excelent paper feed engine.
It has few issues in different areas. It list my Pro-1000, checked by Canon engineer.
1. CO ink usage. For matt fine art paper like Hahnumuhle Photo Rag it use around the same amount of CO as sum of other inks volume. It happlends not for every type of paper.
2. The time, required for printer start. Is "thinking", shaking cartridges, dumping ink into maintenance cartridge.
It is really time consuming, especially after a long period of inactivity.
My last situation - printer was switched on after 1.5 month of not using. It takes the printer more than one hour to performe all start and cleaning steps. More than one hour.