- Dell (long wait and crap customer service)
- Samsung (expensive)
- LG (VERY expensive)
- HP (good but a little slow, so depends on if you are using it for games/movies)
Those are 20.1" or 21" screens, 4:3. Widescreen is a different story, but still fairly limited:
- Viewsonic (VERY expensive)
- BenQ (not the best quality)
- Apple (stupidly expensive)
- Dell (same as above)
If you're gonna go the Dell route, I strongly suggest you read their forums before commiting. The new line of Dell monitors (20, 24 & 32 ") have met with LOTS of issues. Strange thing is that all the review sites give the new monitors excellent ratings, hence my initial desire to get one.
And no, I'm not a Dell-basher - I actually love their products.