Which is better Galaxy S 3 or iPhone 5 and WHY?

I want to buy on of them and I'm still deciding so if anyone could help or give me suggestions.
P.S: I need reasons

I would say the Galaxy s3 because of what it can do and its technology. But the iphone 5's screen is harder to crack when it falls.

You will hear many different opinions. My decision was the Iphone 5… Why?

- Had android before and didn't like it as much
- Quality of the device is a million times higher on iphone 5
- Its screen size (and device size) is perfect for me (S3 is just ridiculously huge)
- great camera
- its incredibly fast in every situation
- its light and compact

I was never so pleased with a mobile phone. I'm so glad I got the iPhone 5. Its really great in my opinion.