I have little experience with AOC, but I just picked up a pair of their Agon ag352ucg monitors, and aside from bad backlight bleed that you only notice when booting, they're very nice screens.
The darkest thing I've seen on it so far was Elite Dangerous (because space is black). I don't notice the bleeding then. I have watched some movies, and you can see it a little on the black bars, but you have to look for it. Not bad at all IMO, for 100hz G-stink panels and decent colors.