My system is good enough at retrieving spatial information to tell me how "big" the sound is supposed to be, also from a good number of large-scale recordings. But portraying the sound as supposed to be big, and as actually being big, are two different things. Yes, my system can have a surprisingly big sound (and several people have commented on that on my system thread), but that doesn't mean it approaches the size of the real thing. A large system in a large room can do this more closely, but even it will never duplicate the real thing either. Yes, perhaps in size an orchestra from one third into the hall, but not from up close. According to Steve Williams, the system of JackD's brother in the Philippines can, but if that were actually the case that would be an exception. It has really large speakers in a really large room.
Big horns are excellent at doing both large scale and orchestra. In fact, Pietro uses his giant Yamamura horns more for small scale. For orchestra, you need horns with good bass integration and space.
Btw, my choice of Apogees was mainly based on Beethoven 9 and Mahler 2 and Scheherazade, but also on the Three Tenors CD and Bach Cello. Is that small scale? If you only have a tenor or a bartitone singing, I assume that is small scale, but then Apogees bring in that whole hall ambience, and that ambience to me is large scale (mileage varies with room acoustics). With SET and horns you can get a more intimate/close in feel.