I had previously with I was a keyboard from Logitech very satisfied until her death. The more astonished I was that my old beloved keyboard was made strongly in the shadows by these Roccat keyboard. With this keyboard everything is just right. It rattles nothing (like Logitech), which identifies the key top is better, the firm hand rest is very good, the thumb buttons are innovative and the rest is true. She's also pretty hard and does not slip.
The support from Roccat is also perfectly: friendly, fast and does not react with predefined text strings.
Conclusion:
Absolute buy recommendation. Who a some time looking for a good mechanical keyboard, could this end the search.