Next time you're in Vegas, do yourself a favor and see a show at The Pearl!  We saw Tool here on their final show of their tour...it was absolutely mindblowing.  Small Venue...there really isn't a bad seat in the house and as mentioned from others, the acoustics are amazing.  My only complaint was that I just happened to sit next to two chain-smokers...but they were super drunk, got into a lover's quarrel and left halfway through the concert ....so, yay!