Dell uses Samsung panels for many of their monitors...
Check this site:
http://www.prad.de/en/monitore/index2.html
They have tons of specs of most of the available monitors, if not all.
Just make sure you don't get a TN panel. They've got the shortest reaction time, but (S-)MVA/PVA and S-IPS have much better image quality. Any reaction time up to 8ms is OK.