I cannot compare this to the domestic version, as I took the plunge and bought the more costly one.
The sound is incredible. Each note of the piano is clear, as is her voice. No hiss, recording sounds. I'm not a sound engineer, but I found the sound amazing -- truly a feeling of being there. In other words, you can "hear" that the music is being played in a concert hall instead of a studio. You can also clearly hear her aside/whisper ("It's apple juice. I know that's hard to believe ...") before she launches into After All This Time (typo on the title on the CD).
The performance on So Far Away is superior to the studio version as well as superior to the "live" version on the re-released Tapestry. She embellishes with both piano and voice; this version is more blues-like than the studio version. I wish she'd left her husband (bass) out of the arrangement, though.
You also hear her Brooklyn accent as she introduces each song ... as well as a little bit on It's Too Late, which also has vocal embellishments not on the studio version.
If you like hearing favorite artists "live" ... and Carole King is a favorite ... then you should own this recording.