In a similar situation, looking for a 24" monitor for gaming and some photo editing.
Was originally going to go for the 2412M but then thought about the Samsung S23A700D 23" (VAT back ATM so ~£205) or the BenQ 24" that was the other option in Cat's list. Now I'm not to sure thought about getting the 2410 but as it is an older panel that put me off a bit.
Now I don't really know which one to go for (read of ghosting issues on the Dell 2412) and don't know which way to look. Not that bothered about 3D although it would be nice to have (although not Nvidia only as I have a 6950), same with monitor USB ports (nice to have but not really needed).