Determining the "best" camera for photography depends heavily on what someone intends to photograph. The best camera for portraits may differ drastically from those for landscape photography, sports, wildlife, or event photography.
I recently stated that the Alpha 7RV is my favorite Sony camera to date, and one of the most ideal platforms for what I want personally in a camera. Since then I've had the pleasure of using the Nikon Z8, and it has definitely made an impression on me as the best Nikon camera I’ve used so far. When we saw that the price was similar, it made perfect sense to do a shoot-out between the two.