I know 6s has the 3d touch thing, which I know little about, but what I've seen I can live without it. I know it has 2gb memory vs 1gb memory. I know it has A9 processor vs A8 And the cameras are quite different, 12mp vs 8mp plus the 6s has 4k video recording capability... I know the 6s is heavier and slightly thicker... I haven't had any bend issues with my 6 at all. Not sure why they went thicker on the 4.7 inch version. Lighter and thinner is better in my opinion... And also know about the so called upgraded LTE bands in the 6s Compared my phone side to side to my friends 6s... Both on the same Wi-Fi.... Pretty much same speeds surfing the net and pulling up apps, on some occasions my phone was faster pulling up the apps... Not sure why? Both phones took roughly same quality of video played back on our phones that is... My screen I like better as it's more white and his yellow, he could of just got a bad one, yellow Hugh I didn't care for... In my opinion the 6 is good enough to hold out for the 7.. I didn't see the iPhone 6s as a must need upgrade..