Granted the best one out there is an Eizo
http://www.eizo.com/products/graphics/cg221/index.asp
which retails for about $5500, which is out of your budget an Adobe RGB monitor one of if not the only one of its kind.
But remember, these are the most color accurate monitors, but still need to be calibrated for your location. I calibrate once a month but I know others that calibrate every other week.