i am surprised no one mentioned richter. i dont think any recording of rach 2 comes close to that.
i think i like his recording the most.
then maybe, rubinstein, ashkenazy.
cziffra's recording is funny, some parts are very well done, others seem messed up. specially he opening of the 3rd movement , it seems he was trying to play that run in not even a second, hehe, kind of not possible.
ofcourse i havent heard kapell or katchen, i hve heard they are good though.
And it seems that ashkenazy was also having that problem in the openign chords, hehe guess his hands werent big enuf, cuz he definitely plays them or as far as i remember atleast 2 or 3 of them as broken chords.