BenQ GW2250HM, GW2450HM and GW2750HM review
 

For these three monitors BenQ has used panels from AU Optronics, which is responsible for the bulk of Vertical Alignment panels out there. They are claimed to be 'true' 8-bit panels, compared to the dithering solution applied to the 6-bit displays of most TN and e-IPS panels. For most uses this difference isn't noticeable, but for colour-critical applications accurate colour rendering is very important.

http://uk.hardware.info/reviews/3055...w2750hm-review