Randomly I have to disagree with the "liszt at his best" comment. The openning is really powerful but for me it just doesn't keep me enthralled throughout the whole piece. It has great moments but I find large portions of it lacking. The opening, along with most of the first movement, and the fugue are great but meh... I just feel there are too many better Liszt compositions to really get into this as much as a lot of people.
Have you heard Horowitz'?