Unless you pay for a very good TV, the HDR benefits are not incredibly noticeable. Out of four 4K HDR TVs that I've watched at home and friends houses, only the OLED 4K TV that costs $2500 had very distinct HDR wow factor. It was impressive. But better $1500 better than the one I have? Not worth it to me.
Eventually extremely good HDR sets will hit lower prices. If you aren't in a rush, wait for one of those.