you raise a lot of points.
from my own experience, i don't necessarily believe that newer recordings are better than older recordings.
a very good, or excellent recording is in my opinion, not a good test of a stereo system. i prefer an "average" recording, to reveal the flaws in a stereo system.
a great recording will be evident when played on any stereo system.
i also believe your stereo system has sufficient resolution to reveal differences in recordings.
from my own experience, i don't necessarily believe that newer recordings are better than older recordings.
a very good, or excellent recording is in my opinion, not a good test of a stereo system. i prefer an "average" recording, to reveal the flaws in a stereo system.
a great recording will be evident when played on any stereo system.
i also believe your stereo system has sufficient resolution to reveal differences in recordings.