I have 24" version of this monitor and I love it. I wasn't really aware of gaming monitors and had always ran on a 42" LCD or LED television. I can say that after making the switch, I can't really see myself gaming on a television again. The monitor itself is very easy to set up and the image quality is great in my opinion. In one of the reviews on Amazon, some guy put up his settings and I copied those and everything was great. Out of the box, the image may seem just a bit washed, but nothing that made me go :x
The 1 ms response time has truly made a difference for me in shooters. I usually always had a KD that was below 1 and after running with this monitor, it jumped to above 1 on games like Halo 5 and Black Ops 3. That may not seem that great compared to others, but for me, that was a huge jump.
Obviously you'll need a headset to go with the monitor as the sound output is poor and not meant to provide anything substantial.
My overall opinion as a "casual" gamer:
Buy it; 9.5/10