My own personal recommendations (although not exactly the newest on the
market!) would be:

Concerto n. 1: Richter (Melodiya)
Concerto n. 2: Richter (DDG)
Concerto n. 3: Byron Janis and/or  Horowitz/Ormandy
Concerto n. 4: Arturo Benedetti Michelangeli/Gracis (EMI)

Giuliano Finessi <[log in to unmask]>