Those monitors are pretty good. I have their bigger brother, the 25.5" NEC LCD2690WUXi.
If you are looking for the lowest pixel pitch, then I recommend the 20.1" NEC LCD2090UXi-BK-SV. It is more expensive than the 21.3" LCD2190UXp-BK because it is the "SV" version.
SV = SpectraVision which is a hardware colorimeter for NEC's monitors. If you see any of their monitor with the "SV" moniker, then that means it comes with a colorimeter as well.
If you want the LCD2090UXI-BK without "SV" then you can buy it for $776...http://www.pcnation.com/web/details.asp?affid=808&item=CK8240