If you have a problem with hardness and glare on Redbook and need to turn the volume down compared to "Hi Rez", it's your digital playback, not the format.
Listening at dB levels in the 70s just touching 80? I listen at peaks of 100 dBC, no problem, and often at averages around 90 dBC or not far below. But everything needs to align for minimum distortion, not just gear but also power and room acoustics. Banishing hardness is, well, hard. Took me quite a while to get there.