Which one is better a iphone4s or iphone5?

I'm looking to get an iphone and i'm having so many mixed reviews, to those who one can you help me suggest which one i should get?

I have the iPhone 5 & it has a great camera & is also a lot faster than the 4s! Also the iPhone 4S is alot heavier & is a pain to lug around! I would recommend the 5 also because there are more variety of cases for the 5 now!