I live in South Korea. I was at a PC Bang (Korean phrase for computer café kinda place) earlier today and noticed that about twenty of the machines had these 27" monitors attached to them. I have seen them for sale on GMarket before and was hesitant to buy till I could see one, so I sat right down to check them out. They look great. I was skeptical about the fact that they were the same panel used in the 27" iMac, but I believe it now. I'm not sure if the ones I played with were the IPSBS or IPSTP, but the panel should be the same in all of them.
Some of the Korean language reviews complain about a weak stand. It wasn't amazing, but it was adequate. On par with any stand you would get with a basic 23" 1080P Acer monitor.
The viewing angles were excellent. People looked at me weird for craning my head all around the thing to check.
Colors seemed great. The ones in the café were NOT calibrated, but I have seen a few Korean reviews that show it before/after, and it can be brought in line easily.
I fired up WoW and CS:S to check the response time, I thought it might be slow but it was excellent.
Build quality seemed pretty good. Elegant look. I liked it a lot.
I'll be ordering one soon. About 250$ to have it shipped to my place in Yangsan. Nice! :-D Makes up for the fact that a decent GPU and CPU are far more expensive here than back home in the States.
Hope this helps!