If you've got hands on the smaller side or just want a lighter gaming mouse, then the newest addition to Razer's gaming mouse ranks might be good for you; the Viper Mini is a compact, lite verson of the full-sized Viper mouse, with many of the same technologies packed into the smaller chassis.
Featuring the same ambidextrous design and ergonomics as its larger counterpart, the Viper Mini comes in at almost half the weight, and features Razer's Optical Mouse Switches and six programmable buttons. It also has an 8,500 DPI sensor with 300 IPS tracking, as well as Chroma RGB lighting underneath.
It's currently available for purchase from Razer's website for $39.99 USD.