If you wish to raise the budget a bit, you should keep an eye on the Dell U2410:
http://jamessoh.com/dell-u2410-ultrasharp-a-dell-monitor-for-photographers/
Looks like a chance for a working sRGB preset and it has support for xvYCC (great for blueray). 10-bit colors and precalibrated.
$899 SGD is about $600 USD . That would have been a good price years ago for such a display, but nowadays with the advent of e-IPS, it's certainly not looking that affordable, especially in times of recession.
There have been lots of people arguing on Hardforum whether this kind of display even makes sense. Some are skeptical as am I whether the WG in such a display will just cause too much color saturation for casual uses like movie watching.
http://www.hardforum.com/showthread.php?t=1441159
Seems they are trying to fit all niches of the market, and you really need the profile setting ability of something like Spectraview to do that well. At 31 ms ave input lag, it appears to be lower than your NEC LCD2690WUXi, but I would guess it isn't as adaptable to non professional use as yours is.
Then again this display would likely be perfect for small and/or startup businesses that can't afford the more expensive pro displays. For consumer use though, I think the NEC EA231WMi, or better yet something a bit larger with the same tech once it's available, would be more suitable to all round use, and more affordable too.