I went to Tao this past weekend and had the time of my life. We met a promoter that got me and my 5 girl friends into the club free by 1am (therefore we were able to go to XS first from about 1030-12). We went on a Friday night, and the music was awesome!!! Personally, I dont like the house/techno music too much, but I always prepare myself for it when I head to Vegas (most clubs dont like the whole 'urban" music vibe). But Tao on Friday played a great mix of everything, from house to hip hop to E40 to Michael Jackson to reggae and back. I literally danced for 4 hours straight, and didnt even realize it was 4am!
The security guards were awesome, and weren't too aggressive. And overall, I loved this club and will definitely be back!