I bought the SACD of his M2. I've listened to it once, so I hate to write too much about it, especially since it didn't leave much of an impression. The opening movement was very dirge-like, and I was not particularly satisfied with the rest of it. Again, though, I have not given the recording much of a chance, and I would hesitate to scare you away from it (or Luisi in general) based on my one listening session.