The one-upmanship between Razer and Logitech continues, each of them announcing their latest contenders for the title of best gaming mouse. First off the blocks was the Logitech G9, boasting a 3,200dpi sensor, and then almost straight after we hear the announcement of the next uber-mouse, the Razer Lachesis, which has a 4,000dpi sensor. Razer Lachesis –...