Help choosing a 27" monitor

[jimthenagual]

I live in Japan, and trying to decide on a 27" monitor. Mainly used for browsing the internet, but I also play a lot of games. Here are the ones I have narrowed down to, they are all about the same price. I know very little about monitors, so I appreciate any help you can give.

Asus MX279HR

Asus VX279H

Asus VS278H

Dell S2715H

 

[jimthenagual]

Or would I do better getting two smaller monitors like these. How would two 23" be for gaming, anyone have this kind of setup? The thick borders of the monitor (two side by side) I think would bother me in gaming, as it would be right in the middle of where I'm looking.