Hi, I've been an avid reader on this forum but this is my first time posting.  I was wondering which Chopin etude would be most beneficial to learn for me.  I have learnt Etude Op 10 no 1,4,6 (studied it only a little bit),9,12, Op25 no 2, 12 and the first Moscheles Etude.  My teacher told me to just pick up anyone that I haven't learned and focus on whatever I feel weakest on. However, I feel that I have so many aspects of piano to work on and really love all of his etudes.

I've tried narrowed it down (still pretty broad XD) to op 25 1,6,10 or 11.  Which one do you guys think is the most suiting for me to work on.  My current repetoire (to give you an idea of my level of playing) is Bach WTC1 no.3 C#-, Beethoven op 79a (les adieux), Mendelssohn Variations Serieuses, Ravel's Jeux d'eau (which I feel is beyond my reach at the moment) and I haven't decided on a modern piece yet.  Thanks in advance!

Would you consider 10/11? Although less flash, I think this one is really good for strengthening the hands (rather than the fingers). Also I find it one of the more musically interesting of the sets. Don't dismiss it as easy. It really isn't.

Op.25 No.5 is not bad and the middle section is nice
Busoni once commented that Op. 25 No. 8 is the most useful etude in the whole of Piano Literature

Maybe u want to try one of those

I would reccomend op10no4 at a slow speed. It covers a lot of ground, and it's nice to learn.

I think the etude in 3rds are quite useful. In my opinion, however, anyone intent on seriously studing the chopin etudes should start with Op.10 No. 3 and 5 and Op.25 No.1

simply because these are the easier and less challenging etudes. they provide good insight into what comes next.

I would pick two more contrasting studies. How about op. 10 no. 3 and op. 25 no. 11? The latter would help you immensely with the Beethoven Sonata that you are currently playing.