My experience as I have a bunch of SHM-CD’s: most of them have a very good sound. Percentage of them having very good sound is clearly higher than “standard” CD’s.
I have two identical records in CD’s and SHM-CD’s: both cases sound in SHM-CD is better.
If this is because the special material, a more careful manufacturing process (pressing, .....) or any other reason I do not know and I do not mind: if I find the SHM-CD version, I buy it.
I listen to classical music, mostly orchestral.