Also, the Nec 90 series are very hard to beat, it all depends on your needs.
Nec also offers spectraview software upgrade, providing automatic calibration of the monitor.
It writes directly to the hardware 'look up table' of the display.
Otherwise, look for a monitor with a 'IPS' panel in it, they have better viewing angles and don't suffer from color shifting. Try to avoid 'TN' panels.