OK, we've already been down this path, with much debate over whether or not Gatti is a good successor for the Amsterdam Concertgebouw. My vote is unequivocally 'yes'. I picked up the straight dvd of their Mahler 2 and liked it very much. I think the first four movements are excellent - as good as you'll hear them anywhere. Any controversy will come in the 39 minute finale, where Gatti treats it as a symphony within a symphony.
There are huge contrasts of tempi in the finale and that makes for - at the very least - interesting listening (and, for me, a very moving experience). Gatti's 'interpretation' of the "Resurrection" moment is on a more personal level - less of a public statement than usual, I feel. Whether Mahler would have liked it done this way or not is quite debatable. But there's no denying that it's simply not the same-old, cookie cutter approach to the work that Amsterdam audiences have become so accustomed to. Gatti brings something new and fresh to the table and, for the moment, that's good enough for me. The playing of the Concertgebouw Orchestra under Gatti simply couldn't be any better or more 'committed'. The camera work is excellent; always taking one exactly where the action is in the orchestra.