Dell has the new Dell UltraSharp U2413 24" 1920 x 1200 IPS LED LCD Monitor for
$500 with free shipping. Normally around $600. Many connections including DVI-D, DisplayPort, Mini DisplayPort, HDMI and four USB 3.0 ports.
CNET's review of this successor to the UltraSharp U2412M.
1920 x 1200, 16:10 aspect ratio, 350 cd/m2 brightness
AH-IPS panel, 6ms response time, 1000:1 native contrast ratio
That's not a review. That's paraphrasing Dell's press release. They even used Dell's picture of the monitor.
I've always wanted to trust Dell monitors. But I had 2 monitors die right after their 3-year warranties expired. I am now using a Korean-made monitor bought on eBay, Yamakasi Catleap with perfect pixels. Great quality and really good prices.
^ and 5 million of those pixels too. Some can be overclocked if you get lucky. Closest thing you'll get to 120hz 1440P any time soon