Building the mouse Logitech won't make

Was like $50 new, so nothing too expensive, has LIGHTSPEED wireless which has super low latency, but also has bluetooth in case you forget the dongle or can't use it for some reason. Or it's also really convenient to switch the mouse between 2 computers simply by pressing the button on the bottom, and it instantly switches.

Uses the HERO sensor which is really power efficient and has a slot for 2 AA batteries of which you only need to actually install 1. Lasts several months off a single AA battery, and also so I just use those rechargeable AA batteries with built in USB port under the cap, so I can just charge it from the computer if I need a little more juice.