I'm resurrecting this thread to share my disoveries. Last month I spent a LOT of time researching a new monitor - in the end i took home and returned FOUR different screens - all of which were supposed to be excellent - until I found one I was happy with.
I am a graphics professional so black level and contrast is most important to me. As long as it's got LED backlighting, most decent monitors today have good color rendition, so I'm not as concerned about that; besides, if colors are slightly off you don't really notice it all the time - but bad blacks and contrast are ALWAYS obvious!
I tried IPS, TN and the new AMVA and the winner was easily the AMVA panel. It just destroyed the rest of them.
IPS has better viewing angles if you're looking at an extreme angle, but if your monitor is right in front of you, that should not be a concern. If I was buying a large TV for my living room, I'd buy IPS, since you want everyone in the room watching to see the same picture - but for anything else (like a monitor or tablet) AMVA has very obviously superior black level and amazing contrast (it also handles contrast better - you won't see any fringing when you look closely at black letters on a white background).
Also, AMVA has great response times, so they are very good for gaming.
And my opinion here is not based on what I read somewhere else, it's first hand looking at many different screens and taking home a lot of them! The guys in the store probably hate me, but at least I did buy one and am VERY happy with the choice.
I got the 1920x1080 27" BenQ GW2750. In addition to the great picture it also has excellent build quality (some of the others - especially the LG - felt very flimsy, like they could easily break). And this BenQ only cost $280! I highly recommend it. It definitley looked as good as the "pro" monitors which cost three times the price (like several from Dell).
Of course you don't have to buy the BenQ just because I said so :-) But at least give serious thought to AMVA, after all my testing I would never get IPS for a computer monitor. I don't care what you read, it's just not that great. Besides, AMVA is new, so most people who advocate IPS probably have not had a chance to compare it to AMVA.
If you do a search, you should find technical comparisons that detail why AMVA is better.