Review on Black Logitech G604 LIGHTSPEED Wireless Gaming Mouse - Up to 240 Hour Battery Life, Dual Wireless Modes, 15 Programmable Controls, Hyper-Fast Scroll Wheel by Nguyn Hong Qun  (Qun ᠌

If microswitches were more reliable, this would be an ideal device in all respects. Has pros: Alternative device. For me, very good ergonomics, but it is very individual. The number of buttons and combinations of their work (due to the G-shift functionality) allows you to transfer many actions to the mouse. The sensor is very good. Got cons: This is my 3rd mouse, namely g604. Without illusions about the future, I understand that in a year there will be double clicks and this is very sad. But the functionality of this mouse covers even this shortcoming.