Should i get a macbook air or should i get an iphone 6s?

Ok so i already have an iphone 5s, but it is getting a bit old and I really want the iphone 6s for the camera. For the macbook air i already have a Lenovo that works fine, but i want the macbook for editing. So what do you guys think i should get?

A rational person doesn't bother upgrading until "need" steps in

if both devices are doing what they are supposed to do youre just spending money for the sake of it