I have only one recording of hers. From one of my Mozart CDs, Sonata in K545. I'll tell you a story. My friend wanted to learn this sonata, so I lent her the said CD. She texted me saying she didn't like the first movement, felt too slow. So I lent her my Walter Klien CD. She liked it a lot better.
Normally, I don't care about Mozart, but I was curious as to why that is, so when I took both CDs back, I took both recordings of the sonata, and another one by Glenn Gould. Played each movement side by side, and took note of which ones I preferred.
For my friend, it was Walter Klien all the way, except that she didn't hear the Glenn Gould version.
My choices:
1st mvt - Klien
2nd mvt - Uchida
3rd mvt - combination
General comments:
Uchida's playing was very subtle, which is sometimes good, sometimes bad for me. Hence, Andante goes to her, no question. Klien plays like I expect. Few surprises. Gould, in contrast has many surprises. I think on some odd days, I'd like the whole thing by Glenn Gould, because his interpretation is interesting. However, I find his Allegro too Vivace.
These are all the samples I've listened to of the said sonata. I can't compare it to my senior's or my friend's playing because I don't remember their versions for too long (not memorable enough).
And like I said, I have no other recordings of Uchida. But I have complete Mozart piano sonatas by Klien, and 2 CDs of sonatas by Gould. I did not buy them, my uncle did.