Szymanowski variations

[stravinskylover]

I just recently discovered Szymanowski, and I love his music. I am especially interested in his variation cycles.

Take these factors into consideration:
-which one sounds better?
-which is harder? (For this poll, the harder one is better)
-anything else you can think of...

I love them both, but I wanted to know what everyone here thinks. I can't play them unfortunately, but I want to know for when I do learn them in a few years time.
Thank you to anyone who votes and says why.