I currently have Plex and Radarr. I only ever got 1080p content because that’s all my tv would do. Finally getting a nice new tv and would like to get a few 4K hdr movies to watch. Should I be looking for Bluray2160, Remux, or disk and what will Plex play?
It depends on what you want. If you plan on keeping two different libraries in Plex I would also keep two Radarr instances, but if you are going for a combined library you could stick to one and just use a different quality profile for the movies you want to be in 4K.