"Fast" perfect gaming mouse

I have not purchased the mouse here, but still want to give a feedback to prospective buyers to simplify the buying decision a little.
The mouse has a very good feel and the offset G keys on the side it shows very fast in what number one is. This was the criterion which was most crucial for me. The Razer Naga has not, unfortunately, and I find that you suddenly need to end up with the Mau in the wrong number and therefore also uses the wrong commands in-game.
The mouse is not suitable for gaming 4K, which are however still very few. With 4K the sampling rate is too low and the mouse moves by quickly. One has the feeling as if the cursor "spongy" on the monitor go.

Benefits:
+ LED color control customizable and easily adjustable by the software.
+ Very precise in Full HD gaming.
+ Very easily accessible gaming keys also for large hands.
+ Fast profile switching thanks to further buttons below the mouse wheel. This one also expresses not even accidentally, as they are really super arranged.
+ Mice Sliderpads very robust and even after a year of intensive use is not worn on a Razer eXactMat X speed.

Disadvantages:
-After One years was broken in with G9, probably the most widely used G button.

Conclusion: All in all a solid mouse with drawbacks in the durability of the G-keys. I think, however, that there are now just part of the company policy of the global players that because after the warranty should something go wrong! The Logitech Support is however perfect, and also exchanges quickly something for free to the course of the goodwill to. From my mouse gets a strong buy recommendation!