Basically everything has already been written, I would just like to underline the following:
The problems described by the WLAN and the brightness variations can be shut off.
Thanks for the tips !!!
The case is sturdy enough, even if you use it on your knees. Not as stable as in a metal housing but who sets great store by the weight, the lack torsional rigidity of a metal housing is happy to accept.
Who pulls / pushes already to test the torsional rigidity in practice on housing around? Sorry, I do not understand some comments. They had unsettled me a bit, so I want this here also to emphasize again.
Let you not confused by these comments !!!
The Bildschrirm (without touch) is not really not dull but glossy. That's something in between but more towards matt. With a window in the back or in the open air you have reflections (more than a really matte display). But for me that's OK, the difference from the pure matte display in practice is not so strong to notice.
But the weight is really awesome (and currently the state of the art, I really wanted to have the HD4400, so the i5 4200 with which the Samsung was sidelined).
That's a tiny gripe for me. But I also am not interested in the best color reproduction and I work more with less brightness.
Conclusion:
The laptop has me especially in the mobility convinced: It is extremely thin and light, the battery lasts a long time and the screen is good, although not perfect (anti-reflective). The fan is barely noticeable when no power is obtained without background noise in the room. But when he gets down to business, he may already be quite noisy (which is relatively, laptops 10 years ago have ever made such a racket).
From me it gets a strong buy recommendation :)
I have configured it individually at Sony. i5 with 256GB SSD and 8GB of memory. I do not know whether the 8GB are useful under Win8, since the memory can not be upgraded, I was taking no chances.
