I watched this show in Vegas this week. I could not get the tickets while I was there 3 years ago.
I was really impressed with the sound and the music. Best live music I ever experienced in terms of audio quality. It literally took my attention away sometimes from the visual aspect of the show.
Highly recommended but pricey. However from what I could gather, they do have enormous production cost.
I kept wondering what kind of equipment and speakers these guys are using....