Is there anything better than live recordings?

The live performances cited by @petg60 are of excellent SQ because they were recorded by SOTA mobile recording trucks or in-house control rooms. OTOH, a good soundboard recording would be supplemented with a submix of dedicated mics. All live classical and opera would be recorded the same way as all their recordings in an empty concert hall or soundstage.

I often saw the 60ft trailers recording sound outside Lincoln Center, Carnegie Hall, or the Academy of Music in Philly. That was when I was young, later in my career I was working in either the sound truck or companion video trailer.

Regarding bootlegs, I used to find some very good quality LPs at Bleeker Bob's. I suspect the house mix engineer was involved in some of the high quality soundboard releases.

How can i forget this, King Crimson Absent lovers, but only on CD.

You also forgot the live concert tracks on Billy Joel - Piano Man Legacy edition :)

What's better than a live recording is a live recording that YOU engineered.  Having spent some time doing location recording, you've learned what works and have brought it home.  When you play it back at home and it feels like it did live, THEN you've got the ultimate in audiophile experience, one that very, very few in these forums has ever known.

Mortgage your house.  Sell your children.  Spend untold amounts of money on your system and it will still not compare to the joy of engineering the recording of a live performance, bringing it home and having it sound that good at home.