Professional displays offer larger color spaces, allowing for more bright and detailed images. When searching for a monitor, seek one that has at least 90% sRGB (optimal for presenting your work on the web) and 70% Adobe RGB coverage (ideal for printed images). sRGB is the computer standard; it's not extremely colorful, so it'll vary with time, but if you have a calibrated 100 percent sRGB display, it'll be the closest match for what other people will see on their computers. You can edit photographs even if your display is poor.