Pros: Very very high quality sound and really beautiful lighting effects. The best I've seen in my entire life. You really have to experience this at least once in a lifetime. My first visit was in September of 2013. I liked it so much that I went there again when I was in Vegas in April of 2014.
Cons: It's difficult to find out what kind of music they are going to play. I really enjoy Electro, House, Techno, Trance and Dubstep, but I'm not into Hip Hop or Rap at all. If they have so many different rooms, I think they should be playing House only in at least one of those rooms or list music genres on their website.
They played Hip Hop almost all the time in all the rooms. That's why I left at 2:00am instead of 5:00am. Can't wait until real club dance music becomes popular again...