Once I had experienced "Le Reve" at the Wynn, I didn't think anything could compete. I love Cirque performances. At first when the show started I thought I was going to be bored. But after a bit it got very exciting. And my family and I were soon captivated. I noticed some reviewers were not impressed with "O", but I did enjoy it very much and would recommend it. I do agree it doesn't start out with a bang but it does become more captivating as time goes on. I gave it four stars only because the beginning isn't as exciting as "Le Reve". Thumbs up for "O".