The Boult on Everest is my first choice for the Vaughan Williams, and
certainly Bloch's own recording, with Marko Rothmuller as the cantor, is my
choice for the Avodath Hakodesh. Unfortunately, I can't tell you if either
has been issued on CD. Both were mono only, but definitive performances.
I do not believe there was ever an Abravanel recording.
Ralph D. White