Here are a few well-known pro-FPS gamers and the mouse of choice. Ninja: Final Mouse X Air 58. Tfue: Razer Viper Ultimate. Shroud: Logitech G Pro Wireless GHOST. Dr Disrespect: ROCCAT Kain 200 AIMO. Sinatraa: Final Mouse Ultra Light 2. Bugha:  Logitech G Pro Wireless. Interestingly, all of the above-mentioned players, as well as most of the professional E-sports players, use a DPI range between 400-800.