I believe response time would depend on the quality of the cable you buy, not the monitor. So I'd recommend you hop over to forum of Wii users to see what products they generally recommend for connecting to a monitor by HDMI. I don't say that to try to get rid of you; I'm just trying to figure out how to help you.
-- HD Tech
I'm considering getting this monitor, and im just wondering about how a wii would work on it.
Since the monitor has HDMI input, but no Component input, I'm going to have to buy an adapater.
Anyways.....I'm wondering if using a decent Component to HDMI adapter would slow the input reaction time significantly or at all?