I am looking to upgrade from IP4 but can't decide on 5C 32g or 5S 16g (budget limit is around UK £500). Is the 5S really that much faster in day to day performance, I want to keep the phone for around 3 years. Problem is that 16g is small in space but I can't justify 629 for a 32g 5s. Anyone have tried both and know the difference? I will not be gaming on it either. Thanks.