I like the O’Conor Beethoven sonatas, too. I also like a newer set by András Schiff on ECM. It’s been a while since I listened to them, but as I recall, the sound is typical ECM (slightly more beautiful than reality), and the performances reasonably energetic but not heart-on-sleeve. I would recommend anyone interested in this music give that set try -- it should be easy via Tidal, Qobuz, or even YouTube to see if you like them.
P.S. Jed Distler said this, on Classics Today: " In sum, Schiff’s Beethoven interpretations may not suit all tastes, yet they invariably hold your attention, challenge your assumptions, and compel you to listen with fresh ears."
P.S. Jed Distler said this, on Classics Today: " In sum, Schiff’s Beethoven interpretations may not suit all tastes, yet they invariably hold your attention, challenge your assumptions, and compel you to listen with fresh ears."