I've listened to a lot of Schoenberg's piano music on recording. IMHO, Paul Jacobs is the most faithful recording I have heard to the spirit of this music. I enjoy other recordings of these pieces, Gould, Pollini, Uchida, but I also find that these inject a lot of sensibilities foreign to these pieces into the performance; for example Gould is playing with tempi, Pollini is being pointedly modern in articulation using fairly rigid (and fast) tempi.
So, if you haven't heard other Schoenberg piano recordings before, what do I mean? Jacobs is flexible with his tempi, things slow down and speed up a lot (often this is prescribed in the score and taken with a grain of salt by the performers), there is a lot of attention to polyphony in the music. Musically, this is one of the most consistent recordings I've heard- often performers don't know what to do with a section and they just gloss over it, but it seems like Jacobs has taken care to sort out all the minutia. For example, the intermezzo of the suite makes sense in this performance (it often doesn't in other performances), the same of the opus 33a.
Jacobs' closeness to this music makes sense; he studied with Steuermann, for whom the 2nd (to none) Viennese often wrote and one who knew them well.