My 2 Daughters started with iPhones at 12 and never broke them. Why do you say that a 14 year old will destroy an iPhone? Don't get an outdated 4S because a 14 year old will hate that it's outdated. Same goes for the 5C as far as outdated goes but if it has to be one of the two then get the 5C.......From what I have seen even HS kids laugh at the 5C like most of us do. Get the 5S.
That is so odd that you would laugh at any half decent phone, let alone a fantastic one like the 5C. What a strange mentality you must have.