Uchida is a genius especially in Mozart... ( Japan artists are special in my heart ) but i did not know her in Schubert i will go for it, thanks ...I dont doubt your opinion about Unchida and Schiff in Schubert, i guess you are right at my first listening ...
For Schmitt i adore her...
But you must listen Szeryng complete sonatas to understand his pulse way over every other interpretations i have heard...
I like Schmitt for his sound articulation...but the spiritual time content is in Szering...pick the first version, the second is not on the same level at all, miracles occur once .
I think I like Helen Schmitt better, but it is a close call with Szeryng. For me, it sounds as if Schmitt is playing somewhere in a cave deep in the earth. Szeryng in a way is more beautiful, but not as souldful. Nicolaeva over Gould. I think for me it will always be Nikolaeva, but I must compare her to Mitsuko Uchida if I can.
Uchida has such a subtle touch which I have not heard in any other pianist. She has recorded all of Schubert's piano sonatas and his impromptus. I have both her recording and Schiff. Schiff is perfect but Uchida touches another dimension. You must listen carefully to hear it. She is like a Zen painter. Here is Uchida playing Schubert's Impromptu 899 second movement. What I would like you to listen to his her left hand and how she handles the harmonic theme. How she coaxes it out.
https://www.youtube.com/watch?v=g9YTnoBqGI4
Here is Schiff and again listen to his left hand and how he andles the harmonic theme.