I'm looking for a 1440p (2560x1440) monitor that's around 23-28 inches, somewhere around there. I don't care too much if it has speakers on it. I'd prefer an IPS/PLS (which is better?) monitor and it should have a fairly low response time, as I am going to use it for gaming. I honestly don't care too much for refresh rate, 60hz should do it but if you can find one higher that still has good image quality and everything else I listed, then go for it. Now, the price range. I'd prefer to have it under $400, but it can be a little above. Also, it needs to be available to be shipped to America.
Edit: Forgot to mention the one's I'm looking at: http://www.amazon.com/QNIX-QX2710-Evolution-LED-Monitor/dp/B00BUI44US/ref=sr_1_1?s=pc&ie=UTF8&qid=1385332060&sr=1-1
and
http://www.ipsledmonitors.com/X-Star-DP2710-Monitor-p/xst1.htm
Edit: Forgot to mention the one's I'm looking at: http://www.amazon.com/QNIX-QX2710-Evolution-LED-Monitor/dp/B00BUI44US/ref=sr_1_1?s=pc&ie=UTF8&qid=1385332060&sr=1-1
and
http://www.ipsledmonitors.com/X-Star-DP2710-Monitor-p/xst1.htm