U2410 has now been replaced by U2413. This is the wide gamut offering, while U2412 is standard gamut.
Be careful with Dell. Their quality control is non-existent, which is why they can sell high-spec models at what is in fact bargain prices. If you're lucky you get a good copy, but you may also be stuck with an expensive doorstop. I speak from experience. I once got a total lemon U2410 that Dell insisted was "within spec" - and it probably was. It was cyan/green on the left side and magenta/pink on the right. Only then did I discover that the market was flooded with these turkeys, and it's still happening: http://en.community.dell.com/support-forums/peripherals/f/3529/t/19526218.aspx
Here's Dell's official policy concerning uneven screen color: "Dell monitors do not have 100% color uniformity specification. As long as the center 2" circle is 6500K, it meets our manufacturer specifications. The center may be 6500K, but the sides and corners may not, which is why you may see that one side or corner is different than the others
You'll probably be better off with an NEC P232 Spectraview, or an Eizo CS230. They're slightly
more expensive than the U2413 and don't offer the same specs on paper, but what you get in return is consistently high basic quality. If you want one with the U2413 specs, the alternatives are NEC PA242-SV, or Eizo CX240 (- CG246). More expensive, but definitely worth it. Best bang for the buck in the US is the NEC, but in Europe prices are more equal (and a lot higher).