Liszt. And it really isn't that close.
They are very easy to butcher, but when given a good performance they are TRULY 'transcendental.'
My favourites are...
Transcendental 3 (Arrau).
Transcendental 6 (Berezovsky).
Transcendental 9 (Kissin or Arrau).
Transcendental 10 (Kissin).
Transcendental 11 (Kissin).
Transcendental 12 (Kissin).
Paganini (I'm not familiar enough with these. I know them all, but only 1-3 very well. The other three I know, but not enough to call favourites).
Paganini 1 (Hamelin, atm).
Paganini 3 (Li).
Un Sospiro (Arrau).
I at least like all of them, love some others, but those are my favourites.