I owned some of the cameras you named. 20MP is great for file transfer. Pro sports photographers need to send the photos quickly through the wire. Big files take too long. R5 makes beautiful photo detail. For birds the sensor is excellent. You can al...
Fujifilm have loyal fans. Their color science is very good. Medium format is for very special photo assignments. I think Canon, Sony, and Nikon are better for general purpose use. More options in glass too.