I am going to see the Haitink/CSO M9 tomorrow (Sunday) afternoon with my mother. This will be my first time seeing a professional orchestra (and my first live Mahler concert), and I am very excited--certainly much more so than my mother. ;-) This next week is also my last week of high school, so the timing could not be better to hear a live M9. With that said, I really hope the CSO records and releases a CD from this weekend, as I have a feeling this performance is something I will not want to forget anytime soon.
The band director from my school was there on Thursday night and also gave an excellent report, save for the horn playing which he said was not too great. He did mention the wonderful playing of the strings--especially in the Adagio--as did the newspaper reviews I found online. One review I found indicated that the performance was "82 minutes of music," so it looks like this M9 will be on two discs if it is indeed released.
BTW, for what it's worth, Barry, one is able to go in and edit reviews (and ratings) on Amazon...I edited one of my reviews just last weekend and the ratings appear to be able to be modified.