Sine Wave Island has the best dances and animations I’ve found in Second Life. Dances do not come cheap, and average 250 lindens. If you love to dance or are a club owner who wants the highest quality dances, however, this is where you get them.
The people running Sine Wave have been professional as well, at least from my dealings with them. They were quick to assist my friend who had a problem, and because of this I intend to give them more of my business.
Visit Inworld: Sine Wave Island