I'm using a Viewsonic 21" monitor at home, and two 18" NEC LCDs at work. You'll hear me singing the praises of Viewsonic for quite some time, as I've had GREAT luck with their monitors. My 21" is a re-furb, and I've had it for almost 5 years without the smallest hint of a problem.
However, the NEC LCDs are awesome, and given a choice, that's what you should do, especially if you're considering running dual monitors. At first, I was skeptical about running dual monitors, but now, I'm trying to figure a way to clear up more desk space at home to do the same thing. Being able to have tons of things open and able to see them all is awesome.
Also, let me throw in a good word for HP widescreen laptops. I just got one this past week, and I love it. Goes through the battery pretty fast, but it's exactly the kind of machine I've needed for a while.