Where would Scarbo place amongst transcendental etudes (S.139)

[bach-busoni chaconne]

Where would Ravel's Scarbo (from Gaspard de la nuit) place in terms of technical difficulty amongst Liszt's S.139 Transcendental Etudes?

[liszt-and-the-galops]

Most difficult by a margin IMO, though Feux Follets is at least arguably on par with it.

Better question: where would it place in terms of quality among S. 139?

[bach-busoni chaconne]

where would it place in terms of quality among S. 139?

O that is an interesting question.

IMHO Scarbo is very well composed to achieve Ravel's intended characterisation, so definitely top 1-2. Chasse-neige also very effective in creating the sense of snow though.