Yeh thinking of the Sony a7r2. I think they are good for videos as well but i think battery drains real quick. Will probably buy 2 extra battery pack whenever i purchase it.

Carrying my canon 80d with a 17-50 zoom was tiring as hell. My d600 with a fifty is a little better.

I guess for pros, quality image is everything. As for me, i think comfort takes priority. When ur happy, stick to it. I started with Nikon then tried Canon, switched to Nikon coz I liked the layout more. Each to their own.