I can't imput on the Samsung, but I have the 2407WFP (basically, the same, sans the HDMI input) and it's fantastic. Everything looks brilliant, the workspace is ridiculously huge, you can rotate it to portrait and so forth.
I use my PS3 and Wii on it (I have an HDMI to DVI cable) and both of them look brillant...go for the Dell
I use my PS3 and Wii on it (I have an HDMI to DVI cable) and both of them look brillant...go for the Dell