Jacques, of course you should listen to what you have, but should also explore gaps in your collection.

Those Blu-rays look like they'll provide you with a lot of enjoyment. Incidentally, it was amusing to see the comment of the reviewer on the Strauss disc, who apparently considered that Strauss, as the composer of all the music, was given undue prominence over "mere performers"(as if they were anything else).

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Enjoy the music, not the equipment.