For CD performances of all 4 symphonies hard to go wrong with recent Gardiner/Archiv set, performance and sound quality both great here. For a good older set the Sawallisch/EMI has been remastered and released as part of "great recordings of the century" EMI series, these are still great performances by any standard.
For Piano concerto start with Kovacevich/Phillips set coupled with equally great performance of Grieg piano concerto. This has been remastered and released as part of Phillips "50 greatest" series, Colin Davis conducting.
For Piano concerto start with Kovacevich/Phillips set coupled with equally great performance of Grieg piano concerto. This has been remastered and released as part of Phillips "50 greatest" series, Colin Davis conducting.