The iPhone 6S is an overall good phone that will please everyone with its simplicity and power. A big enough screen, good camera, and fast controls will leave you satisfied as an owner. However, after also owning the previous iPhone 6, I would prefer the 6 to the 6S.
Good camera; smooth big screen; fast controls; simple; pretty display; good for talk and text
3D Touch will not be used much; cracks easily; not much upgrade over predessecors