I would suggest our L'instrument or Vandy 7's
Sorry to disagree with the other posters, but the Vandy 7 are not large enough to really do justice to a big classical piece, the Vandy's are too short to project a big enough sound stage nor do they really go low enough in the bass.
The Macintosh speakers are not transparent enough, but they do move a lot of air.
The best speakers for big classical music is the Scaena line array's they are both transparent and incredibly dynamic with extremely deep bass, as the speaker is almost six feet tall the sound stage is life sized and the system uses two 18 inch bass drivers with a 700 watt amplifier and a dsp crossover/room eq box the system's low bass can be tuned to the room, they also play incredibly loud and can be driven with either tubes or solid state.
Harry Pearson who listens primarily to classical and realistic levels uses the Scaenas.
I second the Wilson recommendation if you have a room that can make full use of them. Remember the sound you get is a function of the speakers and the room itself. Lastly, I have heard the JBL Everest DD 66000 and do not think they are serious contenders for reproducing good classical music, but then again it could have been that they were in the wrong type of room and their electronics might have been under powered.
The distinction between types of music relative to speaker design is silly. A well recorded jazz piano trio has every bit as complex and demanding a tonal pallette as symphonic music, and is only constrained or affected by level and room acoustics. A big system in a big room simply sounds louder, and the dynamic element of classical music at high level often has little to do with an actual live symphonic musical experience unless you regularly enjoy concerts on the podium sprawled under the conductor, or suspended by wires over the orchestra. Big systems in small rooms are dumb, and a small system in a big room means you might have to sit closer to it, right in the path of the servants trying get by you to serve the soup course to the Rothchilds.