Alright, i've received my benq XL2540. Strangely, the monitor has a nice gamma and better than Aoc, as for refresh rate is 240Hz it's smoother than 144Hz and apparently i can see them in slow time world when they move fast.
Anyway enough of gaming, let's try the real test refresh rate with infamous testufo site:
I added one more UFO count, total 4 UFO counts(240fps, 120fps, 60fps, 30fps), no background and speed 3840 pixels per second. Result is, they're all different, especially 240fps vs 120fps for those curiously want to hear/read my experience, so, guess what, the 240fps is much smoother or clearer than 120fps like almost no blurry.
As for monitor spec itself.... argh i'm too lazy to type, here. 
Oh yeah, the panel type is TN which is unfortunately for IPS/VA lovers. http://zowie.benq.com/en/product/monitor/xl/xl2540.html#specification
The monitor has no G-Sync/FreeSync which is also bummer, but i don't mind it since i don't see different, i always turn off vsync(Duh.. it's 240Hz and saves cost). And good thing it comes with cover screen to avoid dusty(thumbs up to benq) plus shields... uh.. it annoys me LOL.
So, in conclusion, uh i love it. xD
