All just my personal opinion
Beethoven: Sonata for Piano and Violin No.9 in A major, op.47, “Kreutzer Sonata” — comparing 12 recordings: Busch/Serkin (1941), Capuçon/Braley (2009), Faust/Melnikov (2008), Grumiaux/Haskil (1957), Kremer/Argerich (1995), Menuhin/Kempff (1970), Mullova/Bezuidenhout (2009), Oistrakh/Oborin (1962), Perlman/Ashkenazy (1975), Perlman/Argerich (1998), Szeryng/Rubinstein (1958), Tur Bonet/Vişovan (2020)
Media Review — Oxana Shevchenko playing Stravinsky: Complete Works for Solo Piano (2 CDs, ★★★★½): Scherzo (1902), Sonata in F♯ minor (1904), 4 Études for piano, op.7 (1908), The Firebird (arr. Agosti), Trois Mouvements de Pétrouchka, Souvenir d’une marche boche, Valse pour les enfants, Ragtime, Piano-Rag-Music, Fragment des Symphonies pour instruments à vent à la mémoire de Claude Achille Debussy, Les cinq doigts, Sonate (1924), Serenade in A, Tango, Circus Polka for a young elephant
Franz Schubert’s Four Impromptus op.90 (D.899), in interpretations by Arthur Rubinstein (1928, 1949, 1950, 1958, 1961) and András Schiff (1990)
Felix Mendelssohn Bartholdy: Songs without Words (Lieder ohne Worte) played by Ilse von Alpenheim, in her complete recording from 1980 — there’s more to this than mere encores! Also included are two interesting sets of variations (opp.82 & 83), and the Andante cantabile e presto agitato in B major
Johannes Brahms, Violin Sonata No.2 in A major, op.100, in 3 interpretations: Henryk Szeryng & Arthur Rubinstein (1960) / Leonidas Kavakos & Yuja Wang (2013) / Isabelle Faust & Alexander Melnikov (2015)
Beethoven: Piano Sonata No.26 in E♭ major, op.81a, “Les Adieux” — comparing recordings with the following artists: Wilhelm Backhaus (1961), Paul Badura-Skoda (1969), Daniel Barenboim (1984), Ronald Brautigam (2007), Emil Gilels (1984), Friedrich Gulda (1967), Arthur Rubinstein (1940 and 1962), Artur Schnabel (1935)