BT TV do HDR on some of their channels, mainly sport at the present time I believe. I had some nice lady ring me up and try to get me to upgrade my box to an HDR capable one. I pointed out that a) I watch very little tv so couldn't care less, and b) Mrs D, who does watch tather more tv, is blind in one eye anyway so its wasted on her.
Its like when I bought the tv in the first place. The sales twit was trying to extoll the expensive virtues on the pricy new 8k model that had just landed. I pointed out that 4k is already a finer resolution than the human eye can discern at normal viewing distances, so its a waste of time. He clearly didn't understand the physics behind simple optics and continued to pratrle on about 8k until I asked to speak to a grown up.
I'm a hard sell.
And that inadvertantly raises an ineresting point. I presume your living room is pretty big, else a tv that is going to give pretty poor viewing resolution if you're too close and the eye can see the pixels. Mine is 50" and 10 feet is just about ok, not that I'm paying much attention to it most of the time.