I've heard the guys over at PC Perspective
rave about the cheap Korean monitors and grew over the last 6 months or so, but I still haven't had one in front of me to view myself. I just find it too risky when it comes to reliability and an actual warranty. I spent money on an Asus VS278Q-P.
A note on that Asus is that I feel the colors were off and couldn't be calibrated to what I've used on prior Asus models (23.6" and below). Compared to the Dell in the S2740L
flavor and it's possibly low-binned LG IPS screen (vs. LCD/LED) however, it fared far worse IMO and not correctable in the washed blues tones. I've never been able to correct a blue screen and just sent it back for another Asus.
So like Laxios states (but in my own words), if you go IPS you go big or stick with LCD technology at half the price IMO. It's so hard to gauge video quality by reviews or buyer feedback as we just don't know if they're video geeks or not. It's much like judging sound cards or A/V receivers as we all have our own tastes and mental benchmarks. I'm more of an audio geek than video and can tolerate the Asus and it's dated LCD just fine for general computing and gaming.
Gotta keep in mind that 27" is a huge size upgrade and your gaming may suffer for a bit as you adjust. I remember saying that way back when while changing from 19" to a 22" CRT, then again with just a minor jump from 22" to 23.6" LCD's. The jump from 22" -> 27" is massive.
(Oh, and no DVI input on the VS278Q-P but it does come with a DVI-to-HDMI DHCP capable cord.)