It all depends on the record company.
Generally, German & UK pressings from the late 70's and 80's are amazing, especially the 45rpm maxi-singles.
US pressings I found to be generally mediocre, but there are exceptions.
Regardless of the source, vinyl is still a mechanical medium subject to wear and degradation.
It never sounds better than the first time it is played.
There have been more modern standards for analog storage, but none has really gained a market.
Considering the limitations of human hearing, most of the qualities you are all perceiving are fairly subjective.
Frankly, even when I was using vinyl, I usually immediately recorded it to a high quality tape system and limited playback of the discs.
All that being said, the Prisma is still a bit underwhelming.
But...as Amiga hardware goes...