i've used dozens of mice at very high level play in FPS games and i'll never not shill the OP1 8K (purple haze is even better if you can find one)

>the best firmware you can get, latency is in the nanoseconds range
>special switches which activate instantly when the leaf spring leaves the upper contact, not when it hits the lower contact (eg. no travel time)
>no debounce delay
>the best build quality of any mouse, by far
>rock-solid shell rigidity
>godtier powdery oleophobic coating, does not accrue gamer gunk
>cable's stress relief bends upwards to keep the cable out of the way of your pad
>motionsync and flawless 8khz polling
>software is a 20kb no-nonsense menu that has everything you'd want

it just works and i totally forget it's there