very disappointed 136

Purchased replacement (economic) a DELL U3011.
Received quickly, solid construction, complete package.
However the backlight was too form and not at all homogeneous, and no adjustment is made.
Suddenly replaced by an AOC A-IPS screen two times cheaper and much better for the blacks and the IPS glow, and just as good on the colors and responsiveness.
In short, very disappointed with this ASUS screen (I'm not the only one to have problems like that), by against 5 stars for Amazon and return smoothly.