Should I Buy an iPhone 5 or wait and get a 5S?

I currently have an iPhone 4 and my contract ends 05/22/13 but i'm not sure when that time comes i should buy a 5 or wait for the 5S to come out.

You should buy Iphone 5S

It depends on when the iPhone 5S comes out. If it comes out in like June I would wait and get an iPhone 5s. I know I would be able to wait to get a new phone for like more than a month so it depends.