All just my personal opinion
Concert review, Armida Quartet @ St.Peter, Zurich, 2018-07-08 — Bach: The Art of the Fugue, BWV 1080; Mozart: Adagio and Fugue in C minor, K.546; Beethoven: String Quartet in B♭ major, op.130 / Great Fugue in B♭ major, op.133
Concert review, Auryn Quartett @ Konservatorium Bern, 2018-05-14 — Debussy: String Quartet in G minor, op.10, L.85; Mozart: String Quartet No.17 in B♭ major, K.458, “Hunt”; Grieg: String Quartet No.1 in G minor, op.27
A “statistical overview” over the recordings on the 142 CDs included with the box set “Arthur Rubinstein, The Complete Album Collection”
Beethoven: String Quartets — summary for comparisons of recordings, involving the following ensembles: Alban Berg Quartet, Amadeus Quartet, Artemis Quartet, Brooklyn Rider, Busch Quartett, Chiaroscuso Quartet, Emerson String Quartet, Endellion String Quartet, Guarneri String Quartet, Hagen Quartett, Kuijken Quartet, LaSalle Quartet, Leipziger Streichquartett, Melos Quartett Stuttgart, Quartetto Italiano, Quatuor Mosaïques, Takács Quartet
This is partly an anecdotal addition to my review of recordings of the Beethoven String quartets, partly a contribution to my collection of personal biographic notes…
Beethoven: String Quartet op.135 —comparing recordings with the following ensembles: Alban Berg Quartett (1982), Amadeus Quartet (1963), Artemis Quartet (2011), Busch Quartet (1935), Emerson String Quartet (1997), Endellion String Quartet (2005), Guarneri String Quartet (1969), Hagen Quartett (1990), Hagen Quartett (2012), LaSalle Quartet (1976), Leipziger Streichquartett (1998), Melos Quartett (1984), Quartetto Italiano (1968), Takács Quartet (2004)