I bought a 30" Dell that uses an IPS panel. It is factory calibrated for sRGB amongst others. It has ten bit colour. It costs about $1800. It has made life a lot easier to get the 'colour' correct.
Check out the Asus 23 inch monitor here. $389
http://www.pccasegear.com/index.php?...ducts_id=19503
It may be the answer for your image processing tasks with a calibrated monitor.
Bert