I recently upgraded my phone from iphone 6 Plus to iphone 6s Plus.The speed of the phone is a lot better compared to the previos one.It hasthe new A9 processor and 2GB RAM.The 3d touch display is really cool and the camera specifications are also better compared to iphone 6 plus.
The display is of 5.5 inch but it is good for a change.If money is not a problem I would definately recommed buying this phone