Favorite sets/albums?

[beethovenfan01]

I'm talking about sets of pieces that are commonly played together in concert. I love the Schubert Impromptus Op. 90 and 142, Chopin's Ballades and Scherzos, Rachmaninoff's Preludes Op. 23 and 32 (does anyone ever play a whole opus of them at once???), and Beethoven's Sonatas Op. 109, 110, and 111 (but again, does anyone ever play them altogether, though?).

Note this is different from a single work (Schumann's Fantasie, or Petrushka, for instance) with multiple movements.

What are your thoughts?