Should I buy a Samsung Galaxy s3 or iphone?

I need a new phone and I found a great Galaxy s3 deal for £20pm and its for 2 years. I wanted to know if I should buy it because the contract is for 2 years and I don't want my samsung galaxy to feel old. At the moment I have a blackberry and I hate it! My contract was for 2 years and after the first year it felt old. So should I buy the galaxy s3 or iphone 5? I don't want to be mainstream and buy an iphone plus my brother already has an iphone 5 so I don't know how my mum would feel about buying 2 iphones. Also is the internet faster than an iphone?

Galaxy s3 for me. I don't like iphone with its battery hidden.

S3!

I have an iphone and I use it as a phone and for pictures. I only use the internet in emergencies when I absolutely need it and I don't have access to anything else. Using internet on small portable devices really stinks. I have used both Android and Apple products. Apple is the superior product overall, but it has limits on certain things.

Compre um Iphone 5!

Buy a new S4 -- much better than the S3