I also had expected the Staatskapelle Berlin on the list. I had the chance to see them twice during their Mahler season 06/07 and would
attend more concerts if more often in Berlin.
Not only the recent Mahler recordings, but also the Schumann (I like it much more than Zinman, Gardiner or the recent Dausgaard) and especially the (often bashed by German critics) Beethoven cycle show the fantastic sound and capabilities of the orchestra.
However, whatever one might think of such rankings, in this particular case it shows, that in our times a orchestra has to be very present to receive international appreciation.
If you check the web page of the Staatskapelle, you will find a list of recordings „since 1991 with the participation of the singers and musicians of the Staatsoper Unter den Linden and the Berlin Staatskapelle“.
We can see 23 CDs. (omitting DVDs). But this includes the Daniel Barenboim Wagner Ring with the Bayreuth Festival Orchestra (-4), historical selections with Suitner, Barenboims Chicago Stravinsky etc.
At the end, we have: M7, M9, Beethoven cycle, Schumann cycle, Tannhäuser, Brautwahl (Busoni) and a few others. They have not even listed the Fliegende Holländer, Boulez' M8, Fidelio and maybe some others.
But this shows the point: in science there is the word "publish or perish". Like it or not, that's a fact, and at least you have the choice to publish selected IMPORTANT things with style or print any single thin idea again and again. The Staatskapelle surely follows a very (too?) strict version of the first path.
Again, I like the Staatskapelle very much and in particular the Tannhäuser might be one of the most-played CDs in our household for the last 6 years, since my wife listened to it several dozens of times (and we don't have only one Tannhäuser), but maybe they have to work on their publication strategy.
This has nothing to do with being good or even “best”, but that's how it works.
Some orchestras have their own label now and this does not necessarily lead to the best results, but only waiting for people coming to Berlin or for Warner/Teldec having a generous day is probably not enough. For example, the Gürzenich Orchestra Cologne offers CDs of a concert right after the concert. After a while these CDs can be downloaded via iTunes (unfortunately in a very reduced format, otherwise I already had checked out the new M5 conducted by Markus Stenz). The BRSO has regular 5.1 broadcasts on Friday evening. Why do I have to travel 450 km to hear the Staatskapelle more often?
Michael