My favorite recordings are those of Walter Gieseking, my favorite modern pianist . I most admire his performances of Bach's Well-Tempered Clavier, Mozart's Sonatas, and Debussy's Complete Piano Works, for his nobility of thought and technical ease.
My most cherished recording is the Rachmaninoff Concerto no.2 and no.3 played Ashkenazy. The first recording, of course. It is among the best Rach 2 and 3. It was also nostalgic for me because it is one of my first recordings I got.
I have some other ones, but I can't think of now.
How about the Alkan concerto for Solo piano played by Hamelin? Legendary recording.