Dell is offering UltraSharp U2410 24-inch LCD Monitor for $399.99 with FREE shipping. Use $149.01 instant savings to get final price.

What it does & Why you need it:
Dell U2410 features 1920x1200 resolution; 6ms response time; wide-gamut IPS panel; 400 nits brightness, built-in memory card reader & USB 2.0 port. Accepts HDMI, DisplayPort, DVI-D inputs.

You may also want to consider: 
24-inch UltraSharp U2412M | 27-inch Dell UltraSharp U2711  | 30-inch Dell UltraSharp U3011