Okay, you've given the Dell 2007FPW a consideration, which is good. I'm a gamer too... so I can tell you how it feels on it.
The response time shouldn't matter much here. Anything 16ms and under will net you good image all the time. I've played BF2, BF2142, Guild Wars, and some NFS Carbon. While Carbon has nothing to set a widescreen resolution, BF2 and 2142 can be forced to display at a custom resolution.
I personally think the 2007FPW is worth it in the end. You get svideo, composite, DVI, and VGA inputs at your disposal. As a bonus, you get a 4 port USB 2.0 hub to hook up other devices (ie. webcam, digi-cams, mouse, keyboards, etc.). How ironic, though, that since I have a TV tuner card, I might not use the other video inputs as much as I would like (I've a GameCube, PSone, and Dreamcast).
I'm still evaluating the two monitors I got... but for games, it can handle it, especially if you got the card to render at its native resolution. For movies, it's been wonderful. I managed to view a bit of Final Fantasy VII: Advant Children, some Matrix, Howl's Moving Castle, Spirited Away, a glance of Inside Man, Gridiron Gang, Crank, Full Metal Alchemist: The Conquerer of Shamballa, and Truman Show. Seeing them all really makes having a widescreen monitor a nice thing to have.
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