What kind of screen are you using ? CRT, or TFT ? I've read on forums that TFT are now better than CRT (larger gammut, better time life...). But what about price ?
My main display is a very unexceptional, getting old Hitachi 21" CRT. The only LCD I've got is the one on my Apple Powerbook. The budget has been a little constrained around here lately!
I did play with some of the EIZO LCD displays a while ago, and they certainly struck me as being of very high quality, and correspondingly expensive.