Is it worth it to buy a iPhone 5s?

I only have a iphone 4 and I don't want to be one of those people with the wack phones in the future. And my mom is giving me money on my 14 birthday (August 23). And I hear a lot of people say that the iphone 4 and 5 are the same. So if any one has an answer should I buy the iPhone 5s or should I just keep my iPhone 4 for now? I just don't wana be one of those people with the lame phones.

I suggest you choose iPhone 5s or S5.

I will do a brief compare here:

Both are very good phones in terms of specs and reputation. Both have fingerprints scanning feature to unlock the phones. It's very hard to pick one over the other. But, S5 does have better camera, so when you take a picture, the effect looks better. IPhone5s is also not too bad for taking pictures, it has 8 MP. However, iPhone 5s is not waterproof. S5 is waterproof, that is one of the killer features S5 has to offer.

But, iPhone5s is smaller, making it easier to carry around. But I found that wathcing any flicks or movies on S5 seem to be better than iPhone5s.

Also a lot of people are having tough time using IOS. However, one really good thing about iPhone5s is that it shows better picture quality when you are taking pictures at night.

Just my opinion.