Great Classical Recordings

Hello Great Hive of Knowledge -- and Opinion --

I can’t find what I am looking for. I know many great classical performances but not one that is actually RECORDED well in the sense that Muddy Watter’s Falk Singer is a great recording. Best I can describe it is you hear instruments arranged in space (a sort of sculpture), not a mush of sound. I am especially interested in operas and symphonies. but would also like to hear about smaller ensemble work 

Thank you in advance.