This is Michael Tilson Thomas's 25th--and final--year with the San Francisco Symphony. In addition to being a charismatic conductor, an adventurous programmer, and a tireless educator in the Leonard Bernstein mold (although as far as I know, his personal life is far less turbulent!), Thomas has been a friend and advocate of surround recording. Of the dozens of discs released on the SFS Media label during his tenure, the majority are SACDs that include 5.1 mixes. (There are also some fine DVDs & Blu-Rays.) Mostly hall ambience--sometimes "big" ambience--but clean, spacious, and well engineered, just the same. I'm happy to have many MTT Mahlers and John Adamses in my collection.
The pandemic has scuttled the tours and gala performances that were supposed to mark this anniversary, but as a consolation prize, the orchestra has begun releasing live archival recordings from each year of the MTT era. One per day, through June 28th. Start here:
https://www.sfsymphony.org/MTT25/1995-96
And here's an assessment by the
Times's classical music critic, Anthony Tommasini:
https://www.nytimes.com/2020/06/05/arts/music/san-francisco-symphony-michael-tilson-thomas-mtt.html