I have been using Nikon DSLR's for 20 years. My current gear includes D850, D750, & D750 (IR converted), cameras. What would I gain (or lose) by changing to the new NIKON mirror less cameras . I DO know that they are lighter. However, I never did like an electronic view finder and have had a few NIKON low end DX cameras that had them. So, please tell me why I should or should not switch. Another reason I am typing this is because NIKON rumors is SATURATED with "Z" discussions and not much about the DSLR cameras any more. Please enlighten me!