All just my personal opinion
Media Review — J.S. Bach: The Sonatas for Viola da gamba, BWV 1027 – 1029: Jordi Savall / Ton Koopman (1977), Anner Bylsma / Bob van Asperen (1990); Lucile Boulanger / Arnaud De Pasquale (2011); includes “collateral” reviews of works included with the aforementioned CDs, such as J.C.F. Bach’s Sonata in A major, J.S. Bach’s violin sonata BWV 1023, and the Toccata No.2 in C minor, BWV 911
Arthur Rubinstein, “The Complete Album Collection” (a first look);
Busoni vs. Bach? — Arthur Rubinstein / Ton Koopman, Toccata, Adagio and Fugue in C major, BWV 564
Bach, St.John Passion BWV 245, with the following artists: Harnoncourt / Equiluz (1965), Jochum / Haefliger (1967), Rotzsch / Schreier (1976), Koopman / de Mey (1993), Suzuki / T?rk (1998), Gardiner / Padmore (2003), Layton / Bostridge (2012)
Bach: Italian Concerto BWV 971 — Gieseking/Landowska/Leonhardt/Staier/Koopman/Rousset; Partita BWV 831 — Gieseking/Gould/Rousset/Staier
J.S. Bach: 4 Duets, BWV 802-805 (Koopman, Rousset) — J.S. Bach: Chromatic Fantasy & Fugue, BWV 903 (Landowska, Staier, Rousset, Koopman)
Bach: Cantata BWV 36, “Schwingt freudig euch empor” — Comparing 2 recordings: Koopman/Amsterdam Baroque Orchestra & Choir (2002), Lutz/J.S.Bach-Stiftung St.Gallen (2007, DVD)