Good lightweight shoes?

I'd like to buy a cheap, good lightweight shoe for my ITG (In The Groove, like DDR) play, and some casual running. In ITG, you mainly stomp/move your feet around fast, so i need a lightweight shoe. I was looking at some puma's, running puma's, and they are all cheap. It won't give me the weight of them, but im sure there lightweight. Any other shoes tips appreciated.