The only skeptism I have about this screen (since I am so keen to get it, G sync and all) is the colour quality.
While I am an FPS junky and prefer the smoothness over 4k I don't want to be sat fascinated with 170fps but showing bland colours. Obviously I'll wait for the reviews, but this is alot of money.
All I do know is that the customer service based on user feedback, and the overall quality of AOC monitors is extremely well praised. 200Hz refresh though, lets say its delving into a new beginning so I hope it comes out well. Not sure I want to be the guinea pig so to speak.