Nikon users I need your help… I use a Nikon D850 body but I want to move to mirrorless. I can’t afford thousands for a camera but the Z6, Z6II & Z7 are in my price range if I sell my D850. My question is, do I sell what is often regarded as Nikons best DSLR and replace with a 2018/19 mirrorless camera? Is this an upgrade? To add, this would be for dog photography so looking at the autofocus in particular