Hi Axel,
Whilst the full set of The Royal Ballet is good, for some reason side 1 of record 1 is better than the others and as you so rightly claim, it is perhaps the most realistic, sublime and convincing recording of the full symphonic orchestra able to be reproduced in one's listening room?
Dear Daniel, all my suggestions are readily available for under $50 (allowing for double LPs). I specifically do not go for the 200gm 45RPM re-issues.
I've never been convinced by the much admired Harry Belafonte at Carnegie Hall and his Return album, nor the Weavers Reunion at Carnegie Hall (all of which I have).
Whilst not being my taste in musical genre, I find the voices and instruments (though undemanding), to be well recorded. However for me, the true worth of a 'live' recording is hearing a realistic recreation of the 'space' and the audience.
On these albums I hear little of the actual 'space' of Carnegie Hall and the audience is simply an ill defined sometimes distorted screech of nebulous applause.
Compare these to the Simon and Garfunkel Concert in Central Park where you can 'hear' into the night........where the location of a surrounding audience is palpable and individual members of that audience are able to be located.
For that matter, listen to the 'space' and the audience of the Greek Theatre on Neil Diamond's Hot August Night?
Far more difficult instruments to combine and record well than those at the Carnegie Hall concerts.
Even Eric Clapton Unplugged manages a realistic capturing of space and audience.