Differences between iPhone 4 and IPhone 5?

I've had the iPhone 4 for about two years now and wanna switch it up so I ordered the iPhone 5. Was it worth it? If so why or why not. What special about it?

Imo, not worth it. It's thinner and has a larger retina display.

iOs 6 maps is a plus, too.

Huge performance increase, and the iPhone 5 is taller giving you a bigger display. I think it would be worth it, because the iPhone 4 lacks some features like Siri.