Just received my 27q last night. Thanks to all the reviews and commentary here I went ahead and ordered one last Friday, I was pleasantly surprised by how fast the shipping was, though I was more concerned about it arriving in one piece rather than quickly.
Replaced a 1920x1200 26" KDS monitor and a 19" 1440x900 Hanns-G monitor with just this one monitor, and I'm surprised at how well it's working. I thought it'd be a bit harder to adjust to the loss of the second monitor, but it's doing the jobs all rather well due to the high resolution. The picture is just incredibly sharp, I'm quite pleased with the high jump in quality. Haven't seen even one dead pixel so far, but I just got it so I'll just have to see what happens. A slight bluish hue, but it's so slight it's barely noticeable.
I'd remembered reading at one point that the stands were often wobbly, weak, or off level (That might've been on one of the other Korean monitors I'm not sure anymore), but I would totally disagree from what I've got. The rubber grip on the base keeps it firmly planted on my desk, and even with my wobbly desk it barely moves at all. The buttons for brightness/on off being on the back is sort of annoying, but sort of nice in a way that it keeps the front so smooth. I'm already quite quite happy with my purchase.
On a word of note for Linux users, at least from my experience last night setting it up. Nvidia's proprietary drivers did not detect the monitors resolution at all. I was stuck at 640x480 at max on the proprietary drivers, but the open source Noveau driver picked it up just fine. On my GTS 450 I see a performance increase in Linux, but Windows saw a slight performance hit. I don't use Windows for too much, and the few games I do play didn't take a big enough hit to really worry too much about it. I intend on replacing most of my rig as the year goes on, so that shouldn't be too worrying. All in all I'm very pleased with this monitor, and I'm really tempted to pick up a second, but money isn't quite there, and neither is the power of my rig.