This mouse has to be one of the best mice I have ever tried throughout my gaming years, very few have withstood my expectations in a competitive level and this being similar to my previous mouse, the Razer abyssus in it's style made the transition even smoother than I expected. The viper ultimate is slick, responsive and I would have to say a must for anyone who is even remotely interested, I will be using this for many years to come like my previous mouse and it'll serve me in both casual and competitive fields. 10 out of 10.