Looking for another Chopin etude, same level as Revolutionary

[Bob]

Winter Wind?  Which number is that?

Black key maybe? 

[dnephi]

I recommend Godowsky Etude #42  It's a little easier than the Revolutionary Etude.

If I'm wrong, and you're joking, then Winterwind is 25-11, black key is 10-5, 10-3 is Tristesse, 25-1 is Aeolian (sp?) Harp, 25-6 i thirds, 25-8 is 6ths, 25-7 is often referred to as the "Cello," 25-9 is the Butterly, 25-10 is octaves, and 25-12 has too often been called the "ocean" etude.

I hope this helps.

As far as technical goes, 10-8 is a wonderful piece about as hard as 10-12.  Good luck.