KitGuru tried the Acer S277HK 27 inch 4K Monitor
A quote from the article:
The Acer S277HK is a 27 inch, 4K IPS display with a focus on smart, attractive design. It has a particularly thin bezel, termed ZeroFrame by the company, an asymmetrical ?L-shaped? metal stand and all the connectors arranged in an easily accessible groove at the back. With excellent colour reproduction along with good brightness and contrast levels, the S277HK delivers great picture quality at a price that's highly competitive with competing 4K screens.Acer S277HK 27 inch 4K Monitor Review @ KitGuru