Right now I am debating on either the Asus vg278he (144hz) or the BenQ XL2720T (120hz). I plan on connecting up my xbox and playsation up to them. I also plan on doing 3D gaming with them as well. I will occasionally switch them from surround to multi monitor use occasionally. It will also be used as a pc monitor, I do really heavy gaming. Can you really see a difference between the hz when in use?