Relative to Barenboim/LvB, the SQ is very good, and nos. 6, 7 and 8 are well-performed. His 9th was a huge disappointment, lacking passion and excitement. Not even as good as Vanska, and definitely not in same league as Furtwangler, Fricsay, Wand, and Karajan '63. Better than Giulini, though.
As for no. 3, not bad, but no match for Karajan '63 or Bernstein/NYPO. Same with no. 5, and of course with this one it is hard to beat Kleiber.
All this is surprising, given that his LvB violin concerto with Perlman/BPO is still at the top. Perhaps he has lost a great deal with age, and it has not been replaced by more profound insights either.
But given your experience, I will have another listen. Thanks.