I'm not sure what your timeframe for buying one of these things is, but the reason Dell is having so many sales on their LCD's is they're trying to get rid of the old models before they announce the upcoming 2407FPW.
The 2407FPW is rumored to have 8ms response time and an HDCP connector among other improvements, so if you want, hold off and see if it will be better.
My problem with Dells is they are rather bright to achieve their high contrast ratios, but then again I'd use it more for programming than gaming or movies so whites need to be lower intesity.