Dream Combo
I had the D500 and D4s which I thought was a great combo for sports and nature photography. After I Purchased the D850 I ended up selling the D4 S on eBay and have No regrets at all. Sure, I lost a couple frames a second but the resolution of the D850 blows away the images I made on the D4s. The auto-focusing ability is amazing in low light situations and the 45 megapixels give me the ability to crop if needed. The design is similar to the D500, so it is basically seamless to switch from one camera to the other as needed when shooting. I think I´ve found my dream combination!