i bought one of those razer mouse (mice?) for gaming a couple years ago. Really happy with it. Very different feel than a lot of other models on the market, but works best for me.

Otherwise I gamed for the past 10 years or so a microsoft optical mouse and had no problem with it.

It seems like people get on the hype train when it comes to keyboards and mouse (mice?) and spend extra money when you don't need to

It feels extra good to PK someone when you know they spent X amount more than you on hardware, keyboards and a shiney new mouse when you spend nearly nothing.