Thanks you. I wasn't thinking of the Zeist Batz, because most of the sound samples given for that organ are of evangelical type organ music (on that site and also on ContraBombarde) with that awfully fast and schmaltzy tremulant which is a bit too much for my taste. I like to hear this organ with period music of Mozart, Beethoven, Ruppe, Rinck, etc. etc.
Since I didn't, I didn't think of this organ. The specification of the Zeist covers the The Hague, so that's good.
I will write to the sample set producers, as generally their organs are not at all well represented for all musical tastes audio-wise on their own site, and neither do you have anyone posting on ContreBombarde. They need to address this issue (same problem with Voxus, which is even worse; only one video of the Haarlem on their site, only playing tutti; so what's that for a demo of that organ, which costs nearly 1000 euros?).
See where I am coming from?