Basically, you will pay for contrast, color reproduction (both number of colors and overall gamut), and viewing angle.
The Apple Cinema Displays and some Dell displays both had a reputation for being good, but in any given year they can go from great to crap in no time at all, so YMMV. I have a 2005 Dell 20" SIPS and it's a very nice display...but I had to purchase it as a refurb because the 2006 were not rated nearly as well.
The biggest point I wanted to make to you, though, was more general: do not be afraid to spend money on a good monitor. It pains me when I see people spending a lot of money on a computer and then cheap out on the interface devices. Unless you're building a cluster (or something else you'll rarely work with directly), that's a mistake. Aside from the power switch and maybe a few indicator lights, all of your interaction with your computer is done via the keyboard, mouse, and monitor. And of those links, the monitor is the highest-bandwidth medium of interaction. It makes sense to spend money there; if you don't, your whole experience of using your fancy new computer is going to suck.
Also, interface devices have a very long lifespan if you purchase good ones. Last year, I upgraded (to the Dell) from a high-end CRT that I bought in late 2000. My keyboard is from 1996 (having long outlived the computer it came with), and my mouse isn't exactly a spring chicken either. I'm sure I'm not that atypical. (I know guys using IBM Model M keyboards that are way older than mine. Hell, they're older than some young people I work with.)
You only get a few years to recoup in productivity what you spend on a computer itself. All the expensive stuff inside that chassis will be so much e-waste within far too few years. But you have a lot longer to wring the value out of your input devices. Buy quality, and you'll be enjoying it 4 or 5 computers down the road in all likelihood.
Same goes for office chairs.
http://accessories.us.dell.com/sna/products/Monitors/product...
The key point is that it is LED backlit - this means much better contrast than similarly priced screens, as well as generally less power consumption.
CNET also gave it its highest-ever image-quality score, which as far as I can tell, is based on as objective of tests as they could do.
http://reviews.cnet.com/lcd-monitors/dell-g2410/4505-3174_7-...
I've had good luck with Samsung-made screens. Nice colors and reasonable prices. Even for gaming(back in the day), they were still ok.
I read somewhere that DELL monitors are re-branded Samsung monitors. Not sure if that's still true or not.
I have had good luck with Dell; a 24" LCD and a 37" TV. Both have beautiful color rendering, good contrast, great brightness. I have had the 24" LCD for probably 5 years, and it still looks as good as the day it arrived.
I have not looked into LCDs for a while, so I don't know if Dell still makes good ones.
The best guarantee of quality is probably to buy a high-end monitor from a company that also manufactures the actual panels.
Buy a used CRT, they all look good at whatever resolution you want and you keep something from ending up in the landfill and save a few bucks.
I am coming to this conclusion too. How should I select a desktop monitor? Are there specific features to look for? Help a clueless-about-hardware fellow HN er!