I’ve been running it on the X for a couple days now. No major issues. I few app crashes and some minor bugs here and there with iMessage and Siri, but no more than I was having with iOS 11. iOS 12 feels a little snapper maybe. I think Apple made good choices with this update. Nothing revolutionary, but the changes are very welcome. Notifications are much better. I still prefer android notifications, but at least now I actually feel like they are useful in iOS. I’m still playing with some of the other changes but overall I can say it was worth rolling the dice on a beta.