I probably had bad luck ...

Immediately upon Windows startup I had noticed it: "Starting Windows" had a red color fringe at the white font. The contents of the desktop did not look much better. Especially striking was the when calling the menu (bottom right with the keys).
Ok, you can probably not be really included in the assessment, since there is probably a defect.

As defects, however I have to perform:

The illumination in an image with a lot of white space, such as the call to Google, is anything but homogeneous: Links greenish, right pink appearance.
One can because the menu but to control and adjust "Uniformity compensation". The result is significantly more homogeneous.
Unfortunately, I can no longer adjust the brightness and contrast adjust (which is now specified) Also I can not select more AdobeRGB or sRGB then.
That's crap. So if I want to have, for example, Adobe RGB, then I would have to live at the same time with a poor surface homogeneity.

Furthermore, the illumination is not particularly in dark images. The halos in the corners are a little better than the Dell U2713HM (I also briefly had) but still troublesome in the same dark places (such as in the evening with a desk lamp)

Otherwise, the picture is beautiful but sharp, the monitor makes no noise and with the setting "Uniformity compensation" looks at the tables and text so pretty good. Only for photo editing unsuitable (IMO)

Maybe I've also just caught a cucumber, I would not rule. After all the other reviews here so full of praise.