I'm sure everyone interested has already heard it, but I strongly recommend the wonderful recording of the last piano sonatas by Krystian Zimerman on Deutsche G

I'm sure everyone interested has already heard it, but I strongly recommend the wonderful recording of the last piano sonatas by Krystian Zimerman on Deutsche Grammaphon. He plays on a customised piano with an action closer to that of the instruments of Schubert's day, and the effects he achieves are startling and spectacularly beautiful.