I ended up buying an android, but my mom got a 6s plus, so i looked at iOS9. Its not bad. The 3D touch works really well. Its not a HUGE change, but its not bad.
FYI - Android is still better 😉 haha
Oh Yeah iPhone 6S And iPhone 6S Plus,
6S PLus is just Useless it has the somethings as the original 6S Only Bigger.