I agree with others in that what perhaps may be rated lower is not really so with Chopin. My teacher back when I had one made me do Clemente, Mendelssohn, Schumann and Mozart works before ever introducing me to the easier Chopin pieces and mid Beethoven Sonatas. Then we moved on to using Chopin Etudes sectionally as studies for other composers works. With her a lot of Bach was important as well. So in ten years of study with her Chopin was about last on the list of to do works. You had to be able to play with full emotion, yet reserve that ability ( hold back a bit, in other words control it) before she would introduce me to it.