Freddy, Todd,
I'm sorry to sound jaded, but I'm afraid I can't share your enthusiasm for Janson's new Mahler 2. Just like his Chandos one, I don't hear anything that distinguishes it in any particular way. In fact, he strikes me as slightly mannered with his gear changes through the 5th movement's long march section. I found nothing special about the climactic end to that long march, and the end of symphony lacked a degree or two, in respect to both excitement and power.
While the deep bells were quite audible (and played as written, not "ad lib"), the high and low pitched tam-tams were underwhelming. The organ in the Concertgebouw, while quite pleasant to listen to, isn't the most powerful around either. As a result, once again, I actually prefer the Chailly/RCOA recording to this one. Among recent additions to the M2 discography, I still like the Paavo Jarvi one best.
While Jarvi's chorus is relatively small in numbers, there's genuine excitement to their singing, and to the rest of the performance as well (great organ too). It also has sonics that are the equal to this one (no sacd layer though).