jp_Try a mouse without a huge click latency.
I have a G400 so don't worry about that. I also don't really know what the "click latency" has to do with actual input lag when I move my mouse?
EDIT:
mebhow would strobing the monitor's backlight introduce input lag? Did you guys actually measure the difference or are those just anecdotal statements?
It seems to add about 4-8ms of input lag(different methods seem to give you different results). You can look it up on google if you want to, as this is definitely not just some "anecdotal statement"