I have over 150 classical DVD/BRs that I watch on a 106" screen and listen through a 7.1 loudspeaker setup where the front speakers are about 9' 6" apart and the surround speakers are on my sides. The room has sound treatments so I hear what's on the disc, not distorting reflections from the walls. My reviews concentrate on the surround audio, as you can pretty much judge the video and stereo for yourself on youtube and similar sites.
Picture is fine. Colorful costumes and good lighting. The start menu does not allow you to chose the audio track and subtitles, Play starts in stereo without subtitles. A minor inconvenience, but the Top Menu should let me chose the sound track and the subtitles.
Sound stage for the DTS-HD MA 5.1 surround track is very wide, about 160 degrees from surround to surround speaker. Not only the orchestra is laid out like that, even the voices move from surround to surround. When the forester sings from the left corner of the stage without being in view yet, sound is out of the left surround. This is the only recording I know that goes to this extreme. Most recordings that have the voices move at all put the stage corner half way between the front corner speaker and the surround.
It certainly gives you the feeling of sitting in the front row, almost in the position of the conductor.
But then the singing starts and you realize that the voices are too soft, relative to the orchestra. Although I believe to see signs of a body microphone under the foxy wig of the vixen, the sound pretty much represents a stage mic only recording. Much of the action is at the back of the stage, which explains the softness. It probably sounded like this for the audience, too, so you could call it "realistic", but it should sound better on a surround track with body mics used properly.
I would give it 5 stars for the surround but only 2 for the voice recording.
Then I switched to the stereo track to hear how that was done and it turns out to be a better mix. Orchestra and voices are in better balance and you can hear the singers, but now of course the sound stage is only between your two front corner speakers. Overall, it sounds like as if you sit somewhere around row 12. It seems the audio engineer used the body mics here. Sound recording and mix is Yves Baudry, Editing Jean-Baptiste Etchepareborde plus another half a dozen names involved.
If you listen to it in stereo, it's o. k. As a surround recording, it's a poor mix and I can't recommend it.