I enjoy Opus Cemballisticum, although most people don't, but I am not sure where you can find a descent recording. I don't mind Madge's as much as most people do, but I know that there can be much better.It will still give you the jist of Sorabji.
Does anyone share my obbsession with Chopin's Barcarolle Op.60? It is the most beautiful and unique piano piece ever written. There are so many more pieces that are amazing, I won't bother with a list becuase I will just keep on ranting forever...
Anything by Gottschalk!O