Apple displays are of incredible quality. I should know; I have two of them. Normally, I would say that they are worth the extra money. Not this time.
The problem I have with the current Apple displays is the ADC connector. Only the new Power Mac and Power Mac Cube will work with these displays; no other computer will work. What happens if Apple decides to switch to another connector (or goes back to DVI)? You'll have to buy a new display. You won't be able to use your ADC display with your next computer. Money you could have spent on other things will be used for buying another display.
As for displays, other than Apple, I like
Mitsubishi displays.
Hey Apple, go back to standard DVI and we'll buy them.