Zumba Shoes! What do I buy?

I go to 2-3 Zumba classes a week and I need shoes just for the class. I don't want to use my running shoes cause the class will wear at them. So I am here to ask what shoes do you use? The brand? Why do you like them and if you have tried any shoes and didn't like them.

I was looking at Ryka Exertion Shoe or Nike Shox. What do you think about them? Help me decided and soon :)