Passing an old Logitech G11, I must say I am more than satisfied with my purchase. The backlight "area" of the keyboard is great and the fact that the useful buttons (ZSQD and space bar) to be strengthened is a huge bonus.
The touch is very good and shortcut keys very well thought out. Nothing to say, for the price it is difficult to better. But the side "Christmas tree" can not please everyone.