Previously, there was a DeathAdder from China for 4k, it served for 3 years (only the side button, far, quickly died). Then I bought a razer mamba elite, but I didn’t like that the wheel sometimes began to scroll down by 2 positions when scrolling down, and I wanted to get rid of the wires. So far, the mouse is completely satisfied. : several months have passed. There are no complaints about the mouse, everything works like clockwork.