If one can't afford the thousand bucks or so for an NEC or Apple 24-inch display, then the best option is the Dell U2410. Unfortunately, there are egregious issues with LG.Display's panel QA, and the monitor companies have finally grown sick of accepting endless returns from us display snobs (and there's a part of me that doesn't blame them, since the fault is really LG.Display's). The Dell U2410 (or HP LP2475w, or NEC EA231WMi) buyer will have to hope he gets a good one and/or that whatever unformity / tinting problems turn up will be within his tolerance levels.
One option recommended on XTKnight's LCD thread is buying a refurb NEC LCD2490WUXi, but the refurbs only come with a one-year warranty, which might be unacceptable to a business buyer.
Another option (which I am seriously considering) is getting the NEC EAC231WMi when it's really cheap (a few days ago it was $260 after Amazon cashback on Buy.com, heh). You're probably at least as likely to get a duff panel as with the Dell (and the NEC is only 1920x1080), but you won't feel as disappointed / enraged, since you'll have spent about half the price of the Dell U2410.
I wish somebody over in Korea would do something about LG.Display's manufacturing practices. It's the only IPS producer in the computer market...