I have not seen HDR yet, but I am quite sure it is in my future along with a "4K" UHD set, BD player, etc. However, my own years in the computer technology business taught me not to be too early an adopter. My understanding of technology business and pricing models makes me doubly wary at this juncture. I will let others have that privilege and the "fun" - the bragging rights, but also the high early prices and rapid obsolescence that inevitably ensue. For me, what bears close watching is the degree of UHD BD releases that fully utilize the technology, as well as the enhanced UHD color space, etc. Without a "critical mass" of source material, I do not see much point.
We are still in a period of rapid early development, hence obsolescence. UHD, HDR and related technologies are inevitable, to be sure. Everything I hear indicates this new stuff will be significantly better. But, trying to buy future technologies too early can be an expensive and frustrating proposition. So, I am probably at least a year away, likely more than that. I feel the same about OLED, by the way. It remains to be seen if Quantum Dot technology, perhaps, might be a better long run choice.