But nobody has mentioned my favourite - Clara Haskil.
I'd have to go along with this...though yes, the Schnabel too is certainly worth the listen.
This is taxing my aging memory, but I seem to recall reacting favorably to Curzon on LP (Decca/London) many years ago; not sure if I even still have it, though.
I know that I have a number of others, including Richter of course. Guess I need to do a review of my collection one of these fine days, just to see what I DO have...

Dirk