Yeah, APP is mostly excellent throughout. I just highlighted Silence and I because I always thought it's quite amazing how 'transparent' the orchestral section is (many parts playing simulaneously yet all still distinguishable), but that applies to pretty much any of their albums. Genesis 1.32 (from I Robot) is another standout in that regard.
It's not always easy to recognize which albums really stand up in a high-quality sound environment. I love the sound of Pure Reason Revolution's The Dark Third, but play it loud and it just gets annoyingly loud; it doesn't become this sort of immersive sound experience that you get from really well produced albums. In that sense, I love Gabriel's III (very unique with its total lack of cymbals, too), but I have no idea how it will stand up. And I'm not sure about the Bloc Party and Oceansize albums I mentioned in that regard either, to be honest. Marillion's Brave is supposed to be like that though, although it never really did it for me.
Come to think of it, Elbow's Leaders of the Free World might also be good. And probably XTC's Skylarking and Nonsuch. I would also think Steely Dan probably has good albums for this, but I don't follow them myself.
Oh, since you mention Pink Floyd, have you tried Roger Waters's Amused To Death?
