Listening again to the first movement, I'm bothered by Jansons slowing down significantly for the 'second subject, which, in fact, isn't really a second subject at all (it's a subsection of the first subject). There's absolutely no indication in the score to slow down there either. There is clear indication to slow down about a dozen more bars down the road (where the true second subject begins). Jansons' first movement is just a tad too 'all over the map' for my taste, and for what I believe the score says to do. Still, I've heard far worse, meaning that this is still pretty good in the end. Also, for my taste, there's not nearly enough made of the series of ascending harp glissandi in the slower, 'moonlit' middle passage. Zinman, Dudamel and Paavo Jarvi all really bring those harp glissandi into the foreground.
On the other hard, the 'teletype' rhythms farther down line in the first movement (horns and snare drum) are really well done. A little steadier hand and better harps would help make this movement become truly great, I think.
Mvt. II - Quite good. I like the slowish tempo. However, Jansons could definitely 'play up' the tango passage somewhat more for my liking. Both Dudamel and Jarvi do just that. Perhaps they're exaggerating the tango relationship there, but I like it. Jansons seems a little bland in comparison. Needless to say, the Concertgebouw woodwinds are excellent. It's hard to fault this movement in any real way, and the cowbells ARE very audible (so why not the harps?).
Mvt. III - Mahler warns against taking this movement too fast, but I think Jansons sounds just a tad sluggish and fussy in this movement. I also think more should be made of the snap pizzicato climax towards the end. Again, the Concertgebouw woodwinds really shine. Not bad, but also not distinguished in any real way, either.
Mvt. IV - even though I think a quicker tempo for IV makes for a better transition into the finale, Jansons secures truly gorgeous playing in this movement. Both the mandolin and guitar cut through fairly well for a live recording. Also, the strings seem more 'involved' in this movement, to me. Personally, I like a little more 'Italian serenade', and a bit less 'night music' in this movement. However, this is still very pretty to just sit back and listen to.
Mvt. V - I've got to tell you folks, I'm not real impressed with the Concertgebouw trumpets at the start of the finale, nor pretty much anywhere else in the symphony where they've been truly challenged (there are even a couple of trumpet 'clams' in the first movement). In fact, I'm not real impressed with the brass in general, but the woodwinds and percussion are just fine. Jansons' tempo relationships - from one section to the next - are really well gauged here. I do think the ending could be a bit more raucous. Still, all's well that ends well.