1) The letters on the keys are cumbersome designer goods. strange "G", distracting boxes / strips in the WASD and cursor keys. And even worse, the bold. It's a very big change with the letters / characters on the keys to be warm.
2.) The lighting can not be set for each application. Illuminate I want in a game only the keys you need, then missing this key later when I surf the internet times. Every reconfigure the keyboard would be bad. So unfortunately, back to the post office with the keyboard.
3.) Even if the lighting is highly praised, but white is not white. The setting 255,77,114 taught me a beautiful white forth. The Logitech-white (255,255,255) was purple with me. To let shine a key in yellow, was not possible to adjust. Either it was more green or orange then already.
I have now resorted to Roccat MK Pro and hope that this keyboard does not have the above problems.
