Is the iPhone 6S that much better than the 6?

Is the iPhone 6S that much better than the 6? - 1

Not really I got the 6s and I wish I would have gotten the 6 cause it's a bit cheaper. The force touch is cool but literally never use it but the cameras really good which is nice

Just some bug fixes that's all…

Yes

Front flash
12MP rear, 5MP front, 4K video, Live Photos
3D Touch
faster processor
more RAM
faster Wi-Fi
faster data
etc

Yes, it is and In case you are looking for a good security app, I would suggest you the best app and that is Leo Privacy Guard.