The Eizo Coloredge monitors are damn nice, but not cheap. They and the NEC Spectraview ones are pretty much the defacto standard for colour accuracy in photo work, assuming you can afford any of them!

I saw the new 31 inch 4096x2160 Eizo one at the NEC photo show a few weeks ago, that one is incredible, but it's even more expensive, at around £4k.

You can, of course, colour calibrate most decent monitors these days and get very good results, but the ones designed for colour accuracy will generally always produce better results.

pca