I have had 2 Dells now and am waiting on my second replacement. Just bad luck maybe, but the illumination was not as consistent as with my Apple Cinema 23 and 17. Also, no biggie, but the built in card reader didn’t like some brands of CF cards.
My first replacement was a refurb and for some reason it had the name and number of the original owner on the packing slip. I called, thinking that he was a contact at Dell, but no, he was the original owner. The monitor, repacked by Dell, was exhibiting the same problem as he had had (very uneven illumination).