Is it possible to run a plex or jellyfin server on an Apple TV like a Nvidia Shield? If so, I might seriously consider getting an Apple TV just to run as a media server.
An AppleTV with an app like Infuse will flawlessly play back 4K HDR or Dolby Vision videos client side (no transcoding) as well as 7.1 lossless TrueHD audio. Unfortunately it wont do TrueHD Atmos.