I've been using iOS 11 since June and it's been awesome especially on my iPad Air 2. Had a few battery issues with it on my 7 plus though, but that has all but worked out. Official 11 is amazing for lots of little reasons, but the biggest for me has been files. That program is freaking magic like.
I haven't decided on if I'm getting a 8 or X, but i'm leaning with sticking with the 7 plus. The 8 plus does have quick charge, but they aren't including anything for it. Nor are they giving the 8 plus the dual image stabilization of the X. That series 3 watch on the other hand is mine! Somedays I just want to be as light as possible and if I can still use my AirPods for calls on that it's as good as bought.
Also job well done with getting 6 of the 7 major film distributors to agree to prices on 4k content and giving free upgrades to those that have already purchased into the iTunes library. That is a huge thing for 4k content that should be news in itself but people don't give a shit about 4k or UHDs for that matter.