Doesn't anyone listen to solo or chamber music?
String quartets: Guarneri, Budapest or Julliard quartets playing Beethoven, Bartok, Brahms, Ravel, Debussy, Mozart, Shostakovich, Borodin, Tchaikovsky--you almost can't go wrong with any of those combinations.
The Borodin recordings will be older and inferior overall to the other two groups.
String quartets: Guarneri, Budapest or Julliard quartets playing Beethoven, Bartok, Brahms, Ravel, Debussy, Mozart, Shostakovich, Borodin, Tchaikovsky--you almost can't go wrong with any of those combinations.
The Borodin recordings will be older and inferior overall to the other two groups.