The San Francisco Symphony runs their own music label which is always of very high quality for both the performance and the recording. They have all of Mahler’s Symphonies (including the 4th). They also have the Beethoven 9th. If you get these on SACD, they are recorded in natural 5 channel surround sound that is REALLY AWESOME if you have the system to play it on.
https://bluecoastmusic.com/store?f%5B0%5D=field_record_label%3A139
https://bluecoastmusic.com/store?f%5B0%5D=field_record_label%3A139