@mahler123 I remember a number of RCA and DG studio recordings of Furtwängler. Also, Warner released the complete studio recordings and it's a 55 CD box set. I'm thinking that would include the RIAS recordings. Anyway, that seems like a good amount to me. I'm unsure as to how many live recordings there are, I was thinking not a lot. I only know of the Salzburg Festival. the Lucerne Festival and a number of radio broadcasts. I don't know anything about the Music & Arts releases.
Yes, I realize there aren't a lot of van Beinum releases. The Andante label issued a van Beinum set which very good. So what van Beinum RC recordings do you recommend?