I looked at that ASUS monitor when i was looking to upgrade to 27'. I always have 3 monitors and the last 3 where samsung 24'. Ended up speaking to a friend who works for EA and asking some questions. He and some mates there use iiyama prolites for gaming and say they really are good. Hadnt heard the make so was a little unsure, did some research and decided to bite the bullet and order 3. Used mostly for online racing with Assetto Corsa so needed to be good and i cant fault them! Great monitor and really like the response time and quality. Tend to run most things on high settings and they cope well. No issues with FPS either so well recommended.
This is what i ordered

https://www.overclockers.co.uk/showp...odid=MO-117-IY

Like the G Sync monitors but they are more expensive and prefer having more monitors for the surround aspec. One day i'll get 3 G Syncs but for now these are excellent.