Exactly. sevencircles speaks the truth--Simon Barere was a great Ukrainian pianist active through the 30s and 40s until his death in 1951 (literally on stage, at the piano). His recording of Islamey still burns in my mind, and his leggierezza is unbelievable. He is primarily known as a great showman, but within this virtuoso reportoire I think he achieves extraordinary musical accomplishments. Here is what Alexander Glazunov said of him: “Barere is an Anton Rubinstein in one hand, and a Liszt in the other.”
And, although I have not played the Liszt concert etudes, judging my the score I find it difficult to believe that Il Lamento, for example, is harder than Chopin op. 10/1. Of course, such judgements are subjective and personal, but Thierry and I have previously butted heads over the difficulty of Chopin etudes. I seem to struggle with them more than he does, I guess. Anyway, figure what works for you, if you like La Leggierezza or Il Lamento, try them for a little while. And listen to Barere.