sound quality from CD to CD

Quality varies from CD to CD, LP to LP, SACD to SACD, etc. That is just the way it is. Once the stereo has enough resolution, this will all become noticible - as you're finding out. The trick is to find the right balance of virtues that allow you to still hear the music despite the problems and yet not dumb down the great recordings.

Arthur

A lot music is recorded below par to others. The bright/harshness isn't contributed only to gear. I can tell the difference in my car as well ............

no equipment works miracles....and the differences between front ends is not as dramatic as many would believe, even on an audiophile disc.