All just my personal opinion
Comparing recordings with the following artists: Casals/Schulhof (1930), Fournier/Schnabel (1947), Fournier/Gulda (1959), Fournier/Kempff (1965), Harrell/Ashkenazy (1987), Isserlis/Levin (2012), Maisky/Argerich (1993), Perényi/Schiff (2004),
Queyras/Melnikov (2013), Rostropovich/Richter (1961), Wispelwey/Komen (1991), Wispelwey/Lazić (2004)
Haydn, Symphony No.68 in B♭ — Comparing recordings with the following artists: Antal Doráti, Philharmonia Hungarica (1969) / Dennis Russell Davies, Stuttgarter Kammerorchester (2009)
W.A. Mozart, Symphony No.17 in G major, K.129 — Comparing two recordings (20 years apart) with the following artists: Christopher Hogwood, The Academy of Ancient Music (1981) / Jaap ter Linden, Mozart Akademie Amsterdam (2001)
Rachmaninoff: Cello Sonata in G minor, op.19 — comparing recordings with the following artists: Truls Mørk & Jean-Yves Thibaudet (1994) / Steven Isserlis & Stephen Hough (2002)
Haydn: Cello concertos No.1 C & No.2 D — Maisky (1986), Mørk/Brown (1992), Rostropovich/Brown (1975), Isserlis/Norrington (1996); Haydn: Sinfonia concertante in B♭ major, Hob.I/105 — Antal Doráti (1972), Dennis Russell Davies (2009), Sir Roger Norrington (1996)
Schumann: Novelletten, op.21 — Richter; Myaskovsky: Cello Sonata Nr.1 in D, op.12 — Mørk/Thibaudet; Rachmaninoff: Vocalise from the 14 Songs, op.34 — Isserlis/Hough; Rachmaninoff: Cello Sonata in G minor, op.19 — Mørk/Thibaudet, Isserlis/Hough; Franck: Violin or Cello Sonata in A — Spivakov/Bezrodnyi, Perlman/Argerich, Isserlis/Hough