I was wondering if anyone has Herbert Kegel's Cycle of Beethoven's symphonies from Dresden, and has any thoughts on the surround in particular - the blu-ray audio release advertises both a 5.1 and quad (and stereo) 24/96 presentation, although according to the internet the cycle was recorded in 1982-1983: https://www.amazon.com/dp/B00EJYGQ2E/. I believe it had a SACD release as well, and in addition has been released in numerous superbudget incarnations over the years.