What are the best sounding classical CDs


I am looking to start a classical collection. I am looking for some suggestions on good classical preformances that have excellent sound.
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The JVC XRCD series has a number of the RCA Living
Stereo classical reissues. They are legendary
performances, known for their outstanding sound
quality. Their only disadvantage is price ($25+ each).
I've got the Tchaikovsky Violin Concerto performed
by Jascha Heifetz and the Chicago Symphony, and it's
outstanding. There are a number of other similarly
excellent classical issues.
My general rule of thumb for sound quality (ignoring the performance) for a high end system, is to avoid Deutche Grammonphon CDs. While there are a few good ones; generally the way they are engineered they sound great in a budget system, boombox, or in the car; but cause me to have quick listener fatigue in a better system.