Once again you’re asserting that IQ is the main factor in choosing a camera. Essentially any current DSLR or mirrorless camera will give you excellent IQ. If that’s you’re only consideration then ok, but it’s pretty narrow minded. For me things like ergonomics and additional features are an important consideration. A Ford Focus and a Ford Mustang might be equally adept at getting me from point A to point B, but I might enjoy one of them more than the other. I still love shooting my D500 but I really enjoy the features that my Z7 brings. Especially IBIS and the ability to see the exposure through the viewfinder. Last night I was shooting long exposures of the Sunshine Skyway bridge with an ND filter. I didn’t have to do any calculations, just made adjustments until I got the exposure I wanted and shot.
There are also those that will say you can get better IQ with mirrorless lenses. I won’t go that far yet, although my Z mount lenses are all excellent. I will say that mirrorless mounts allow design considerations that aren’t possible with DSLR lenses.

Using a Canon Pro-100 for a number of years now. The prints are bright and brilliant. Like any printer to get the best results you must use printer profiles when printing. As far as the high cost of ink I have learned to refill my cartridges'. I have been buying ink from Precision Colors. https://www.precisioncolors.com/
They have all the instructions and tools needed on their website.

It drops the price from $15. a cartridge to less that $2.00 each. The ink matched the oe canon ink. I use their printer profiles through photoshop or lightroom. The prints are amazing.