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The only symphonies in that cycle that I have an issue with are M3, M6 and M7. And even with M7, there are moments in it that I do like (the second Nachtmusik is absurdly slow). I think his M3 is a dud - badly recorded too. In M6, both the slow movement (nearly 20 minutes) and the finale are just too slow and decadent sounding. The first two movements are OK. I think M1 and M4 are very good (Edita Gruberova sounds great). M5 and M9 are both fine. Sinopoli's M2 is a clone of Klemperer, and it's not bad at all. His M8 has a great cast of female soloists, but less so for the three male ones. Still, it's a pretty decent M8. Sinopoli is great in the various song cycles, including the mentioned "DLvdE". The "Kindertotenlieder" with Bryn Terfel is a knockout. I don't know if your box included the shorter song cycles or not. The M2 originally came with a set of early Mahler songs orchestrated by Harold Byrns, I think it was. Those are real good too. And, of course, the playing of the Dresden Staatskapelle is terrific in the "DLvdE".