They are both good but if you really want low input lag you're going to have to look at something like this,
Or if not, I would get the Asus in your selection.
I would second this monitor suggestion. Boyfriend has it on his PC and it's great. I use his PC instead of mine for work actually (remote drafting from home), and when he's not home for games.
So picture quality is good? I have seen this one come up in numerous scenarios and it looked good as well. I hate that I am a sucker for the bezel free displays.