Actually Dell monitors are only 16.2 million colour displays like most consumer level monitors.
As a graphic artist it's important for me to have a monitor that displays 16.7 million colours so I have a more realistic view of what I'm working on. Another plus is that it won't cost me an arm and a leg either. For around the same price as a Dell you can get the
CMV CT-726D which looks great and performs exceptionally well, plus they include a dead pixel warranty (which is very important when buying LCD, a lot of companies don't offer it at all).