27-inch displays priced under $250 was something unheard of over a year ago. Now there are a variety of displays that are priced only slightly more than 24-inch screens but larger. The AOC e2752She is one such screen with a 27-inch panel that features a 1920x1080 native resolution so the extra size doesn't really gain any extra resolution. The screen offers a very bright 300 cd/m^2 brightness level with a quick 2ms response time. Video connectors include HDMI, DVI and VGA connectors. The panel even features 2.5 watt stereo speakers. The stand only features tilt adjustments. Prices range from $200 to $250.
There are a larger number of higher resolution displays now and the prices have come down as well. If you are looking for a high resolution panel for just about any task, the ASUS PB278Q is an excellent choice. It features the 2560x1440 resolution with an LED backlight that offers a nice 300cd/m^2 brightness and quick 5ms response times. Color is quite good with 100% sRGB coverage. It features HDMI, DisplayPort, DVI and VGA connectors. In addition to this, there are a pair of 3W speakers built in. The stand features full height, tilt, swivel and pivot adjustments. Priced around $550.
Gaming requires smooth video. This is achieved with higher refresh rates and low response times. The ASUS VG278He offers a 27-inch display panel that features a very quick 2ms response time and refresh rates of 144Hz. The refresh rate is high enough that the display can be used with 3D display options from both NVIDIA and ASUS but you have to supply their 3D transmitter and glass kits separately. Native resolution is 1920x1080 which isn't as high as some of the others displays but it does have a relatively narrow bezel for those that might want to use multiple displays. Brightness is good and response times are fast at 2ms. Video connectors include HDMI, DVI and VGA. The screen also includes a pair of three watt speakers. Stand includes tilt and swivel adjustments. Priced around $380.
With the release of Windows 8 and its design for a touchscreen interface, touch based monitors are now starting to become available in larger screen sizes. The Acer T272HL features a 27-inch display panel that has a lower 1920x1080 resolution but is fully 10-point multitouch capable for Windows 8. The stand for the display can even let it tilt back at a 60 degree angle to make it easier to use. There are even a pair of two watt speakers built into the display. In terms of connectors, it features HDMI, DVI and VGA video inputs. In addition to this, there is a USB 3.0 port to connect the display to the computer for the touchscreen input. The display is priced at $600 which may be expensive for a traditional monitor but very reasonable for a touchscreen.
For graphics work, you must have a monitor with a very wide color gamut and highly accurate color. The Dell UltraSharp U2713H is their latest 27-inch display from Dell with uncompromising color. The best part is that each unit is factory calibrated for sRGB and AdobeRGB eliminating the need for calibrating the monitor when you first set it up. Resolution is very high at 2560x1440 and viewing angles are great thanks to the IPS panel. The stand covers height, tilt, swivel and pivot. Connectors include DisplayPort, mini-DisplayPort, HDMI, and DVI-D. The display even features a four port USB 3.0 hub but lacks the multicard reader of its predecessor. Priced range from $850 to $1000.