All just my personal opinion
Vibrato, or Not To Vibrate? Personal reflections about the use (or rather: the non-use) of vibrato, primarily from a listener’s perspective, in the context of “historically informed” performances. The listener’s (and performer’s) potential difficulties and advantages with either option. Also: touching on related issues, such as portamento, glissando
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
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
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)
Beethoven: Great Fugue op.133 — comparing recordings with the following ensembles: Alban Berg Quartett (1983), Amadeus Quartet (1962), Artemis Quartet (2011), Busch Chamber Players (1941), Emerson String Quartet (1997), Endellion String Quartet (2006), Guarneri String Quartet (1969), Hagen Quartett (2001), LaSalle Quartet (1972), Leipziger Streichquartett (2006), Melos Quartett (1984), Otto Klemperer/Philharmonia Orchestra (1956), Quartetto Italiano (1969), Quatuor Mosaïques (2016), Takács Quartet (2004)
Beethoven: String Quartet op.132 — comparing recordings with the following ensembles: Alban Berg Quartett (1984), Amadeus Quartet (1962), Artemis Quartet (1998), Busch Quartet (1937), Emerson String Quartet (1997), Endellion String Quartet (2005), Guarneri String Quartet (1969), Hagen Quartett (2003), LaSalle Quartet (1973), Leipziger Streichquartett (2001), Melos Quartett (1985), Quartetto Italiano (1967), Takács Quartet (2004)