Wunder's technique is truely amazing. I missed his performances at the Chopin comp but have had the chance to listen to a few clips. His winterwind was blazingly fast, I've been reliably informed that it's a mere 1 second slower than gavrilov (!). His A minor waltz was played with such natural feeling, it was beautiful. The ballade 1 features the fastest PCF that I've ever heard, but I feel the tempo was a bit too fast and his playing in the rest was boring.