I said nearly flawless for it's intended purpose. It was never met to replace your true desktop rig. It's convenient especially if you did some work on your phone that you need to view and edit on a bigger screen without the hassle. You dock it and voila, ready to edit. All microsoft office apps are fully optimized as well. Also if you are visiting a relative and needed to do some work that was on your device, bringing that dock has been useful for me since they all have PC setups and it ensures ultimate privacy without using their actual PC. It very well depends on your use cases. P.S. my link is when it first came out with the S8, it has improved leaps and bounds since then with better app support.
VR is steadily improving. That screen door effect will soon be gone in future iterations that don't require the phone. It's no way holding your phone while running a AR app is funner and more immersive than using VR. AR apps will be on Google android soon so I'm not even thinking about it (Pokemon go for the win). At least VR has plenty of apps ready to be experienced and alot of people at least are learning to use it since it will be a very much appreciated part of our lives in the near future.
I'm sure if a iPhone had both of these features, you guys will gloat and act like it's the second coming of you know who....... especially since adding boring face recognition and Tango-like AR apps wowed you. DeX is the perfect way to use a desktop class mobile processor and Samsung is doing it without the A11.
I currently prefer iOS for various reasons, but i always give credit where credit is due and have been jumping to android several times, because they had features i was jealous of and there are always things i miss on both sides, when i switch. i switched last year, because i was excited about the AMOLED screens, for example and apple was not delivering. and i was actually excited when i heard that the S8 was getting face recognition, because it works great on my laptop with IR Cam. until i found out it's not using an IR system and i was very disappointed, because this prevents it from working well in the dark.
I personally don't think VR and AR can be compared, they are completely different things... So far AR doesn't seem very good to me, because the screen is way too small to make it feel like you are actually experiencing this in RL.. might be better with tablets, but have fun walking around with a tablet lol... but glasses might help here.
but who knows, maybe something like the ruler or ikea app can be useful. and i think children might have a lot of fun with it.
and VR will become better too, i agree. but it's not in a state i can enjoy it at the moment. but thats true for any VR system that currently exists. most of my gamer friends played around with it for a few hours max and never touched it again. and it cuts you off from your surroundings, which can be good and bad. so at least with the gearVR you won't waste alot of money to test it, if you already have the phone.
all of the things discussed in this topic sound good on paper, but are not ready for prime time - IMHO. it might be good enough for some, but it's not in a state i can actually use and enjoy it myself.