so the 120 is the most important.
And anything between 1-5ms response time should be fine I'm guessing.
The BenQ monitor does seem to be the best choice for that size.
I'll be going to BBY in a few hours and look around
If I go with the 27" it will be between these two
The BenQ is better.
Check out this awful awful terrible review comparing the two (it's actually comparing the Asus with the older Benq)
Just watch the review though, it's just terrivle