No label has the best sound quality on all its CD's. In fact few of even the so called audiophile labels have any.
Real, and true sonic quality has little to do with the label, and more to do with which engineer was on the job during recording.
Few engineers and producers can resist (over) using the very expensive and elaborate mixing equipment they spent hundreds of thousands of dollars on.
And no audiophile products whatever are brand wide high quality (with very few exceptions).
Even the so called all time great sonic performances are subject to scrutiny for over processing in the mixing.
And typically playback systems are so colored, especially when chosen for their overbearing distorted bass reproduction that is so popular, and not true in revealing generally what is actually on the CD in the first place.
But, if its the truest possible to the sonic quality of the actual intruments in a concert performance you seek, there is a 'short' list of tried and true well produced albums (from surprising labels) that can be used for testing your system. But will no doubt at the same time inform you of the very poor quality of almost all other CD's.
It can be found under the 'MUSIC' link at: http://www.linkwitzlab.com/music.htm
There is nothing to buy there, but While you are there you can become educated in the realities of reproduced sound by checking out other of its links.
I can guarantee you that you will find no better quality recordings listed anywhere. If you have an even modestly accurate system, you may find yourself enjoying mucic that you otherwise would have no interest in, just because of its real, and therefore involving, sonic qualities.
