Wow, tough question. After many years of listening to this recording, I'm still not sure where I stand on it. On the one hand, it's a very powerful performance that pushes the work farther towards the more overtly 'expressionistic' sound-world of Alban Berg. On the other hand, it's oddly proportioned and feels like it's bogging down a tad in the two inner movements; particularly the Rondo-Burlesque. Also, the last waltz section of the second movement fails to pick up any speed heading towards its climax (a la "La Valse"). I like the heavy strings and overall weight of the textures in the last movement; particularly if you get one of the newer remasterings, where they've addressed the issue of the 'wavy', out-of-phase strings. Lots of pros and cons, I would say. I certainly wouldn't want it as my one and only Mahler 9. But I'm sure there are others who don't want to hear ANY other version as well.