All just my personal opinion
Schumann, Symphony No.1 in B♭ major, op.38 — comparing 5 recordings: Bernstein / Vienna Philharmonics (1984); Harnoncourt / Chamber Orchestra of Europe (1996); Gardiner / Orchestre Révolutionnaire et Romantique (1997); Zinman / Tonhalle Orchestra Zurich (2004); Dausgaard / Swedish Chamber Orchestra Örebro (2007)
Ludwig van Beethoven: Symphony No.7 in A major, op.92 — comparing recordings with the following artists: Bernstein/New York Philharmonic (1964), Bernstein/Vienna Philharmonic (1978), Böhm (1972), Dausgaard (2001), Furtwängler/Vienna Philharmonic (1954), Hogwood (1989), Kleiber/Concertgebouw (1950), Klemperer (1955), Norrington/RSO Stuttgart (2002), Toscanini (1951), Walter/New York Philharmonic (1951), Walter/Columbia Symphony Orchestra (1958), Zinman (1997)
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)
Comparing recordings with the following artists: Wilhelm Backhaus (1966), Paul Badura-Skoda (1969), Daniel Barenboim (1984), Ronald Brautigam (2008), Emil Gilels (1985), Friedrich Gulda (1967), Igor Levit (2013), Maurizio Pollini (1976), Svjatoslav Richter (1965), Artur Schnabel (1935)
Mozart: Violin Concerto No.5 in A, K.219 — comparing two non-HIP recordings with the following artists: Pinchas Zukerman / Saint Paul Chamber Orchestra (1982), Vadim Repin / Yehuhi Menuhin / Wiener Kammerorchester (1998)
Beethoven: Symphony No.3 in E♭ major, op.55, “Eroica” — comparing recordings with the following artists: Bernstein/New York Philharmonic (1964), Bernstein/Vienna Philharmonic (1978), Böhm (1972), Dausgaard (2006), Furtwängler/Vienna Philharmonic (1948), Furtwängler/Berlin Philharmonic (1952), Hogwood (1985), Kleiber/Concertgebouw (1950), Klemperer (1959), Norrington/RSO Stuttgart (2002), Toscanini (1953), Walter/New York Philharmonic (1941 & 1949), Walter/Columbia Symphony Orchestra (1961), Zinman (1998)