"Same goes on with Wand and Thielemann, it is becoming quite a joke by now, the supposed purity of Austro-Germanic music".
Wand, I can forgive; but it's downright unforgivable with a younger guy like Thielemann - talk about over-rated! We certainly don't need Thielemann's Mahler, but his attitudes are provocative, to say the least. To your list, you can add Harnoncourt, which is kind of a pity. I think he could do a truly great M1, if he wanted to. Anyway, these guys just give me one more reason why I don't consider Mahler to be an "Austro-German composer", but history's first truly cosmopolitan composer instead.