I have more than 3000 CDs of classical music, as well as performance DVDs (opera, ballet, etc.).
Among thousands of other things (including dozens of box sets), I have:
Bach 333 - J.S. Bach: New Complete Edition
More info at:
https://www.bach333.com/en/#contents
and at:
https://classical.centerstagestore.com/products/bach-333-j-s-bach-the-new-complete-edition?srsltid=AfmBOorWrlY_cnhqZUtx0kmaQpP05PtX0tKnB8lnunHyD7cOLQTD8g_8
Release: 26 October 2018
32 Labels, 222CDs, 750+ Performers & Ensembles, 280 Hours of Music, 10 Hours of New Recordings including 7 World Premieres, 2 luxury hardback books, advance presentation of BWV3 Catalogue, plus digital product suite.
Set in four compartments:
Vocal
Keyboard
Orchestral
Instrumental
Colour-coded for easy navigation and ordered chronologically by genre.
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Beethoven - The New Complete Edition [2020]
The most complete Beethoven anthology ever produced, includes over 175 hours of music on 123 discs.
Published on November 1, 2019.
More info at:
https://www.udiscovermusic.com/classical-news/beethoven-new-complete-edition/
The New Complete Edition features recordings by over 250 of the greatest Beethoven performers ranging from Karl Böhm to Alfred Brendel, Claudio Arrau to the Amadeus Quartet, Wilhelm Furtwängler to Dietrich Fischer-Dieskau, Emil Gilels to John Eliot Gardiner, Wilhelm Kempff to Herbert von Karajan, Yehudi Menuhin to Anne-Sophie Mutter, and Murray Perahia to Maurizio Pollini.
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Mozart 225 - The New Complete Edition [New 200-CD Box Set]
In celebration of Mozart’s 225th anniversary, presented by Decca Classics and Deutsche Grammophon in partnership with the Salzburg Mozarteum Foundation. This individually-numbered limited edition is a fusion of the latest scholarship with 240 hours of benchmark performances from 600 world-class artists and state-of-the-art sound recording.
More info at:
https://www.mozart225.com/
+ thousands more.
I also have full lecture sets about composers, 'Western (Concert) Music', etc.