I was very happy about the time of receipt, but I soon discovered these few drawbacks (I will not say flaws, because it does not): the keyboard is much lighter than I hoped, keyboard gamer wants heavier from my point of view. the backlight is pretty darn low, to believe in a manufacturing fault (the light lights up quaprès turning a quarter turn the knob, I do not know if this is normal, I have to report).
Otherwise, happy programmable buttons and ease recognize from the color of the backlight programs. A good place for that.
Zalman thank you all the same, I am still a customer require (and budget)