It depends on the movie and the effort and expense they go through to get a good 4K UHD disc out there. A lot of time despite a major upgrade you still have to contend with revisionism in color timing, no original audio or DNR.
My problem with the format is the menus stink, lack of original audio, and bonus features are usually left off its just the movie.
It also depends on if the Atmos new mixes but I still want original audio.