I am using a two Monitor setup, Lacie 526 and a Mac 26 inch .
I prefer the Lacie but practically I think any monitor is good, if you use the numbers and also verify with your eyes you will find there is little difference between the makes.
Eizo is said to be pretty good, but look at a few screens , see which one you like that fits your budget, pretty much can't go wrong.
I see a lot of work done on laptops cross my doors and if imaging can be done on a laptop screen then a dedicated monitor for viewing should be a step up.