Which one is better? Iphone 4s or 5?

I'm thinking for replacing my 3Gs but still don't know wheter i replace it with 4s or 5. I've seen the spec and compare those two iphones. Is 4s as good as 5?

5 is obviously better, far better hardware. You can't go wrong with either imo.

I just ordered the iPhone 5 because a lot of my friends that have the 4s said its been messing up a lot… & If I were you I'd just get the 5, it's newer, better hardware. But they both basically so the same things.

Considering that your current phone is 3G then the iPhone 5 is absolutely much better option than the 4S. It has more powerful hardware and already running iOS 6, well you can upgrade the 4S with iOS 6 but it will run slower than the iPhone 5