Erik,
I am glad you like Jansons/BRSO M9th!! I think the recording is really special. It's not an earthshaking performance but beautifully proportioned, phrased, and played. And it has the BRSO stamp all over it, I mean the fully saturated, smooth, and rich sonority of the orchestra.
I also like his BRSO M5th which I think is superior to his RCO version. In fact, he delivered a phenomenal M5th back in the 90s with PSO and much of the energy, fire, and insights of that concert are carried over to the Munich performance.
I've heard Jansons/BRSO M6th and really liked it too. Energetic, propulsive, very refined with many details.
John