Did you hear the mess Richter made in that spot on that old recording?
This is by far the most difficult Liszt piece in my repertoire. I find the beginning (up to the cantilenna) the most difficult part of the work, technically, because everything is so "mixed". Heavy chordal textures alternate with light finger work, and it is very hard to make this transition, for me at least. There is a similar problem with the Liszt Wilde Jagd.
The leaps are not difficult, but it is extremely difficult to play them perfectly cleanly - to hit every damn note, in a performance.