16 year olds always want the newest stuff. for sure, you will get an "I love you so so much daddy" if you get her the 5. i dont know about the 4s. Why dont you ask her? i mean, it is her phone.
Dunlop Aerogel 4d 300 Tour w/leather & 18 grams lead, Tourna Big Hitter Silver Rough 17 48 lbs