If you want Copland, but who also collects only Grammophon CDs, you're lucky, because there are plenty of Copland CDs performed by Leonard Bernstein. I guarantee you that if you want Copland, you best buy the recordings of the composer himself, or Lenny. Lenny had been friends with Copland, and he was able to perform Copland's music into the Grammophon world of music, after recording with Sony. If you love Copland's music, you will love Copland's third symphony, including the famous Fanfare to the Common Man. For peace-lovers on music, Quiet City is an excellent piece to listen to.
So far, I listened to both Sony's and Grammophon's third symphony by Copland, performed by Lenny with the New York Phil. Both CDs are truly excellent, and shows the powerful aspect of Lenny, but I love the DG's recording better. The Sony one does sound brilliant, but the DG one sounds even better, and bit more triumphant and moving in the finale.