The relative data density of UHD Blu-ray still offers the highest quality options for video and audio. It is good to know that both Oppo and Panasonic recognize this fact and have appropriate players --

https://www.engadget.com/2016/12/13/oppos-first-ultra-hd-blu-ray-player-is-a-tribute-to-physical-me/

http://www.whathifi.com/panasonic/dmp-ub900/review