@rman9 what @stuartk said related to the MFSL hybrid SACDs.
I actually started listening to them (the red book layer) before I bought my SACD player, and some of them just blew me away due to the sonic quality (not just because I like the music as I have hybrids by other companies that I should like because of the music but they don't sound good). I assume it is the mastering that they did with those hybrids.
But, as I typed previously, I am not sure that MFSL remastered any classical releases on SACD/red book hybrid.
BUT, I did a search on ebay using "MFSL classical CDs" and there were quite a few that came up from the earlier days of MFSL. I would only say that I own a lot of the earlier MFSL red book remasters, and not all of them are spectacular.
Lately, I have also been experimenting with the Japanese SHM remastered red book CDs and some of them (not all of them) sound pretty decent. You might do a search on ebay using "classical SHM CDs."
Good luck on your quest for The Sound!