The only camera you need!
I was on the fence between the D780 and its big brother the D850. After researching both for over a month I decided on the D780. (The special they had at the time was the lynch pin for the decision.) I do not regret my choice! I absolutely love this camera! From the 4K video to the fast and feature rich camera this thing does everything! I love the interface and the focus stacking, and the silent live view pictures is great when trying to capture animal shots. (Make sure to turn that off before going in to the studio or your remote flash won´t work.) I´ve shot videos of myself and others (the face tracking auto focus is great), and I have captured some amazing photos. I really love this camera! I´ve used it for over a month and am still in love with it. You won´t go wrong with the D850 or the D780, but for the cost savings you get a whole lotta camera from the D780 and you can save a little money.