On a positive note:
* Typing: good feedback and a pleasant stop, much better than the old G15
* Volume: the clacking has its limits and is no longer with music on the headset on low volume disturbing.
* Lighting: very light, very easy to read. The separate illuminating I have never used.
* Surface: looks very good, is not overly sensitive to dirt
* Stability: is very solid, can be moved only with difficulty
* Additional functions: Everything included what you could wish for, everything seems solid and is easy to use. The buttons give good feedback.
* Support: Logitech is a very good position, no whining, because everything is changed.
Negative is to cite:
only two points:
* The being arrested the feet could be fixed, now and then they drop out when I pull the keyboard
the most important deficiency:
THE BUTTON'S !!
In the year in use, I lost two buttons. (Alt and Shift Left)
Use is quite strong (3-5 hrs / day) and there is a lot of typing.
The problem of the keys is that the versions with which they are plugged into the switch, are made of very bad plastic. If you're not exactly in the center meets keys, but press regularly side, it comes very quickly to fatigue, then immediately breaks a sector (in principle, the wording an O where a + is cut out), then the key is spongy, and a short time it wobbles and it breaks and the key hooked regularly.
In the specified stop number etc. and particularly the gaming branding that must not happen after one year. My old G15 has held for 5 years and that with Rubber Dome.
However, really good is the support, individual buttons are not there, always a new device.