$150 UBP-X700 is $150. Supports Dolby Vision, you just have to manually switch it on.
https://www.bhphotovideo.com/c/product/1390088-REG/sony_ubp_x700_4k_ultra_hd_blu_ray.html
You were never going to get HDR on a projector in the first place, contrast simply isn't high enough. As for Samsung, fuck Samsung.
If you don't have more than a 7.2 system, Atmos doesn't apply. The real reason to replacement your expensive receiver is the 4K 60Hz HDR pass-through. But if you want to avoid that, you can get a $150 eARC extractor, which can pass the signal to your existing receiver.