First off, I think this is phenominal performance and really enjoy the dvd. But, it seems to me that the audio quality ranges from excellent to muddy, particularly the vocals. For example: "Stay" sounds incredible. The vocals are crystal clear. Compare that to "Walk On" and it sounds like Bono is singing under water... well, not that bad, but the vocals are definetly recessed in comparison. I'm just curious if I'm special or if others have noticed that the vocal mix is sometimes forward, and other times quite recessed. The music itself always comes through with impact and authority, however.