I think its just too early to decide which way to go, so i would wait six months.....see what Steve and other reviewers find, and then make a decision. I switched from a D850 to a Canon R5, and have enjoyed it, but as a wildlife photographer, find the rolling shutter at high speeds an issue, and i shoot constantly at those higher speeds...1/4000 etc. I also tried the Sony a1 , and whilst amazing, missed the more solid feel of the Nikon and Canon systems....I worried about shooting in bad weather with the Sony... it did not feel as rugged.
I have been sad to see Nikon seemingly decline and not produce a mirrorless camera to compare to the other brands mainly in terms of shutter speeds and AF....maybe the Z9 is the return and i will feel happy with one again, much as i did with the D850 untill auto focus technology moved on. For my work which is fast moving action, af performance and fps makes a big difference.....If all the companies are on a level......i think i would rather be with Nikon, the company whos cameras i started with, especially if they develop a nice 600mm pf and 200-600 in the near future.
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