I'll be the one to disagree. I find most modern pianos very well recorded. Whether the mic is very close or many feet away or whether you're a child laying under a grand piano as it is played, the different tones all sound wonderful to me. My least favorite is when I'm sitting in the cheap seats in a concert hall.
Moravec was the long time standard-bearer for Chopin Nocturnes. I prefer the Ultima Nonesuch mastering to the later Supraphon. But I prefer Maria Joao Pires (DG or Decca, the same recording from Universal) even though the recording venue exhibits a lot of reflection/reverb.
As to the Waldstein, I always imagined that Martha Argerich's style would be perfect for it. It's sad that the only thing that remains are traces of a 1970 NHK Tokyo broadcast instead of a bona fide studio recording. She was her usual fiery self a she was in her prime in the late 60's and 70's.