Good but not great
Even at four years after it was introduced, the U2412M remains an excellent overall performer in its price range. It is a comfortable screen to work with. Color accuracy and useable contrast are good, and viewing angles excellent.
We have half a dozen of these monitors in our office; Newegg's latest price reduction spurred another buy; We are a photography shop, and use these panels as second or third displays for holding palette panels, open documents, etc; The U2412M is getting to be old and is being replaced by the U2415.
Out-of-box color and gamma calibration are all over the place; As mentioned above, this isn't an issue if you have a monitor calibration tool available