In many reviews I read many good words about Sony's Xbrite display and that they are better than competition (eg MSI's).
However, not all Sony S laptops are equipped with Xbrite (
http://forum.notebookreview.com/showthread.php?t=29218).
So, you have to ask explicitly if the laptop sold in Saturn really has Xbrite display.
Besides, the display I have seen in Saturn was not that impressive that I'd pay additional 300 Euro for it (the price differnce between well equipped MSI S260 and the cheapest Sony S). Actually, I don't remember of any visible advantages with respect to the MSI display.
The advantages of Sony S are only a slightly smaller weight and better graphic card (if you need it). Maybe the keyboard is also slightly better than MSI's, though I am not sure. The buid quality of Sony (but not design, IMO) is better
than MSI's but, again, I am not sure I want to pay extra 300 Euro for it.
I have seen Sony and MSI in different shops, so my comparison is rather subjective. I was also not comparing the viewing angles of screens. Most likely they are better (the vertical ones) on Sony S but I have no numbers.
A review of similar Sony model:
http://forum.notebookreview.com/showthread.php?t=17531