Choice of monitor

Well whats the budget ?? are you okay with 60hz ? do you have a machine strong enough for that ???

some cheap 25" Acer G257HU


more expensive BenQ GW2765HT


maybe the best Acer K272HUL 27"


http://www.tomshardware.co.uk/forum/id-2912840/benq-gw2765ht-acer-b286hk-ips.html

bit more research

http://linustechtips.com/main/topic/359915-benq-gw2765ht-vs-asus-pb278qr-vs-acer-k272hul/

even more research

http://www.tomshardware.co.uk/forum/id-2456872/1440p-monitor-gaming.html

after reading a bit. overall this benq screen seems to be a choice, i readed that he got a bit of lag 20ms or something quite high (Not recommended for games than)