This would be a great monitor if LG would just get their act together and fix the color uniformity problems that have been plaguing their panels lately.
Powerstrip, or with NVIDIA cards, you can add a custom resolution in the driver control panel.
Did you try using a colorimeter to measure the color temp. difference left and right? My 2209WA (from memory) showed 400K difference on white point with the left being 400K colder than the right. The middle was closer to the left by a slight amount. I notice it, but it's definitely on the mild side.
Thanks.