for me this keyboard is a super choice. I use them for playing Starcraft 2 and, since I love playing with all 3 races, really use all 54 macro keys well. The individual colors can also be no confusion here actually.
The keystroke is more pleasing, neither too easy for me, nor too tight. It can be written with this keyboard is also good.
The display here was somewhat smaller than in many andeeren Logitech products and can not even tend, which is only a small drawback. I use this to monitor mainly just to have either the time or the attention to my Media Player.
The keyboard seems to have everything built very solid in all, except for the palm rest which can be placed on forderen of the keyboard. Once the ground is somewhat uneven, this is very shaky, can however also remove very easily if they should bother.
Thus, I can only say that I have so far had no problems with this keyboard and I hope they me for a long time maintained and does a good job.
From me thus Kaufempfelung if you do not have to pay attention to the Euro in computer accessories.
I hope my review was you / help you.
Cheers
Marian