I got my monitor on monday. It is nice, the colours kick ass for sure, everything is crisp, it is fast, fairly good default settings out of the box, though there are a couple of issues.
I do think (not that I have tried one but at a guess) that if we could get 4k VA monitors that get rid of the black smear and have low response times, those would be amazing monitors.
There is always a tradeoff it seems.
Black screen issue
So I got this following dp cable beforehand to be used with this monitor:
Displayport Cable 1.4 240Hz, DP 1.4 Cable 2M Support 8K@60Hz, 4K@144Hz, 2K@240Hz, HBR3 32.4Gbps, HDR, DSC 1.2, G-Sync & Free-Sync, Silkland Display Port Lead 1.4 for Gaming Monitor, Graphics Card
Unfortunately, it causes the screen to flicker black constantly every second or two, when the monitor is set to 144hz. I put it down to 60hz and then it was ok, but ofcourse that is not good enough. I tried a new hdmi 2.1 cable I had too which was up to 120hz, it was fine. Any idea why that might be?
Fortunately though, the dp cable which says "5k" on it supplied with the monitor seems to be working fine. I have had no black screen yet doing any activity on the monitor.
Reflections
A fair bit of reflection on this monitor I'm finding. Fine on coloured or white content though generally speaking. Just pretty bad when viewing something dark in the day time.
There is backlight bleed too in the corners but that is typical of this panel isn't it. It isn't awful, generally unnoticable, you can see a very slight brighter area on dark content, really isn't all that noticable. Seems like probably about average so I guess I did ok on the panel lottery.