Well those are the main ones I would recommend as well, EIZO, LaCIe, NEC, Mitsubishi, Samsung, and I used to really like Liyama, but they've kinda dropped their quality a bit IMO.
It's still going to be an issue for colour separation/gradient, but that's always been and always will be an issue for LCDs IMO.
My recommendation for best colour reproduction for the gradients displayable would be for an LED lit LCD, like the Samsung 20" XL20, and if you have the bank the 24" and 30" should be out shortly (may already be out near you, but they aren't out here). The NEC 21" is another to consider but it is getting Long in the Tooth and still expensive compared to the Samsung last time I checked, but the rumour is a refresh is expected sometime in the next little while with the new Phillips' Luxeon LEDs.
I still prefer my BIG CRTs for any serious colour work because I can pick out noise better, but to each their own. Hopefully with these recommendations you can find a good match.