Iphone 6s is a good looking phone having a shinning back side and are available in many variants like space Grey, rose gold, gold etc.
With Live Photos, improved camera performance, and faster touch ID are nice - the latter being annoying as well - 3D Touch is perhaps the biggest improvement in the new iPhone models, and one that will definitely find its way to more phones in the future, and not just ones made by Apple.
The only problem in iphone 6s is that it having bending problem otherwise its a good smartphone.