I personally love Razer Mice. Ive had 3 over the past 10 years or so. I cant remember the name of the first one I got but I think it was a Deathadder. I used it for a few years until a puppy chewed the cord and I pieced it back together and it still worked until I could get another one. I got a Razer Lachesis which I still use on my laptop and Ive had 0 problems with it. A few weeks ago I bought a Razer Naga 2012. Im still getting used to it but so far the mouse is an awesome thing. I have a Razer Deathstarlker Keyboard as well and i really like it to. I installed the software thinking it would help with programing the keys and the buttons on the mouse but I simply uninstalled it. You dont need the software to benifit what I see as Great gaming mice. I love them and I will continue to use them as long as they keep making them so that I like what I bought.