I'm unfamiliar with the following DSCH symphonies, which my music store
has on offer in these versions.  If you're familiar with these, or have
some idea about what to expect, I'd appreciate hearing about it:

Symphonies 11 and 12 (plus other works).  Neeme Jarvi/Gothenburg Symphony
Orchestra (DGrammophon double)

Symphonies 6 & 12.  Mravinsky/Leningrad Philharmonic Orchestra live
performances dated 1955 and 1962 (Praga/Harmonia Mundi)

Thanks in advance.

Bert Bailey, in Ottawa