I'm certain most units are perfectly fine, it's just that there is a risk. The pink/green issue with the U2410 is well documented, but Dell takes no responsibility for it. And when you look at the on paper specifications, which are in fact identical to an Eizo at two or three times the price, the inevitable conclusion is that there must be a reason for that...
LATE EDIT: I have posted this Dell caveat emptor a couple of times by now, here and elsewhere. In case someone thinks I have anything personal against Dell: you bet I have. I've never felt so royally scr***d over before or after, and when I discovered that the problem was very widespread, and that Dell just turned the other way without even acknowledging that there was a problem, I became even more outraged that they should get away with it. Keep in mind that this renders the monitor totally useless for critical work, which is what they market them for.
Yes, it's a budget model. That's fine if they cut costs up front where the customer can see it and make an informed decision. But shipping turds while passing it off as gold is dishonest. I paid the equivalent of $850 (in Norwegian currency) for my copy, which is still a considerable amount of money.
What really happens here, I suspect, is something like this: These panels are all manufactured by LG. Like everyone else they have tolerances, and they end up with some good and some bad panels. The prime panels go to those willing to pay for them, like Eizo and NEC. The bad go at a great discount to those not, like Dell. And they set up a balance sheet: number of copies sold vs. dissatisfied customers. It still pays off.