Mozart,Haydn,Beethoven String Quartets......

I'm a little surprised that these recordings have not been recommended yet, but for the Beethoven String Quartets, I think the Guarneri Quartet's recordings are in a class by themselves.

There's also an interesting recording of the Mozart Quartets by the American String Quartet. The recordings were done using the "Axlerod" Stradivari instruments that are housed at the Smithsonian. The playing, and the sound, is fantastic.

Just my two cents. Regardless, I hope you enjoy listening to all of these great, great works.

I think Dvorak's chamber music is also fantastic. Give a listen to the old RCA (I think) recording of the "American" String Quartet and the Piano Quintet with the Guarneri String Quartet and Arthur Rubinstein. I believe the album also includes the Brahms f minor Piano Quintet. Truly great performances.