Shadorne, are you talking about live ACOUSTIC performances like Mrtennis?
Absolutely, the real live symphony orchestra, opera, ballet, quartets and such. I will be the first to admit that the visual and spatial cues of real music in a real live venue are more REAL than from a stereo system but real does not for me equal better enjoyment if good seats, great acoustics and great musicianship are all too rare and performances are very expensive. A $20 CD makes me very content with my system and I think it is a great bargain compared to the mixed bag that I get live....not only can you get better quality sound but you get to pick the best performances from the best artists and bring them home. Furthermore you can hear more detail with repeated playings....something that you only get to do live if you actually are a musician yourself.
If I lived in Boston or Chicago then I admit that I might feel a bit differently. Perhaps I am too jaded by the quality of performances widely available on CD compared to the local symphony orchestra - perhaps it isn't fair on these local artists that they have to compete with World's best on a $20 CD...but that is the way it is.