Mozart's 29th, a Plump Recording
It probably has to do with the acoustics of the Concertgebouw too, but Gerard Korsten gets a really plump, fruity tone from the Radio Kamer Filharmonie in this performance of Mozart's 29th, recorded live on April 16th (link:mp3;128 kbps;will expire). Mackerras's well-rounded Mozart recordings come to mind. Ravel's piano concert in G with Angela Hewitt as soloist and a Bach encore follow the Mozart. This podcast is a keeper.
UPDATE (4/29): A child in the audience screams during the middle of the Mozart, so it's not the absolute ideal, but it's still a bloody good recording to have.