Please don't spout rubbish.
The picture quality is far superior to any junk ass Dell monitor I've ever seen, and comparable NEC display is around double that price.
Apple do many things, but one of them is not ripping off their professional customers.
Also because they are not outwardly saying so, or changing the design, they are not using the same technology in the display that they were 2 years ago. The panels change on a regular basis, and the current panel is the same as the 30" Dell, except with a superior backlight.
Just an FYI to the OP, you can't use more than 1 external display with a Macbook.
Get the Cinema Display, you will not regret it.