Some of the Transcendental Etudes are really quite, well... Transcendental. Wouldn't you know. That said, some of them are easier than they first seem. Wilde Jagd IMO is an example of this, at least for my hand.
That said, I'd do another Hungarian Rhapsody. Contenders include the famous #2 in C sharp minor, the also famous #6 in D flat, and a personal favorite of mine, #8 in F sharp minor.
If you want to do an etude, Un Sospiro isn't a bad choice. Neither is La Campanella, depending on your strengths.