I am still testing the g915. I have a few hiccups that may require returning the keyboard if I do not find a solution. Unlike most refurbs I have bought in the past from secondipity. This keyboard has an occasional glitch I never had on previous, newer, Logitech boards. It will occasionally take a key stroke and repeat a letter like the key is pressed or stuck (ex, dddddddd, etc). It will not stay on the color profile, and always reverts to the default rainbow RGB pattern. Even after saving a new one to internal memory. I have another RGB Logitech that can also save RGB patterns that does not act this way. Price was ok, but another day of glitches and this may need RMA. Maybe the refurbishment did not work this time.