No Nikon camera we've tested to date balances stills and video capture as well as the Nikon Z7. Though autofocus is less reliable than the D850, Nikon's first full-frame mirrorless gets enough right to earn our recommendation.
Nikon Z7 Review Full Frame Mirrorless Camera
Nikon Z7 review: First advanced full-frame mirrorless camera, a good deal for a Pro
Nikon Z7 Review: Switching to Mirrorless from DSLR - Nature TTL