There are three complete recordings of the Chopin/Godowsky Etudes--those by Madge, Carlo Grante, and this new one by Hamelin. Neither Madge nor Grante even comes close. Hamelin makes music out of these thickets of  notes, tossing off the difficulties with apparent ease. The music itself is  amazing. Many of the transcriptions bear little resemblance to the Chopin  originals; but they are original, and winning, in their own right. Don't  hesitate.