I just put in a Pro-2000, and, with an upcoming show, have printed nearly 150 feet of paper in a couple of weeks. Relatively cheap by 24" printer standards, easy to set up (I thought so, but I've dealt with a lot of big printers - there are a few things that can trip you up if you haven't dealt with them before). Beautiful images characterized by unusually deep blacks and no gloss differential (set chroma optimizer to "overall"). If you haven't dealt with big printers before, there are a couple of places to look before you leap.
It's brand-new, so I know nothing yet about reliability, but a friend's iPF-6100 is approaching 10 years old, and has had only one set of new heads in that time (with the sporadic use typical of individual photographers).
Keith Cooper at Northlight Images has both an excellent review of the Pro-2000 and an article on the setup.
http://www.northlight-images.co.uk/canon-imageprograf-pro-2000-printer-review/http://www.northlight-images.co.uk/canon-pro2000-setup/Mark Segal has reviewed the Pro-2000 here on Luminous, with a lot of technical information about color profiles...
https://luminous-landscape.com/canon-pro-2000-review-and-related-items-of-interest/I have a detailed (but nothing like Keith's) setup report and a first prints report here on Luminous - both should still be on the first page of the printer forum. After the show I'm working on, I'll post some more thoughts from all the recent prints.