I have owned this mouse for 3 years now and I really like it. The only negative that I can think of is the scroll wheel, however I don't notice it anymore. The braided cable however is durable if you don't bend the cable a lot like putting it in a backpack or laptop case to use for a laptop..
Mouse is very comfortable - Customizable to fit other people's hands - Cool design - Lots of buttons to map - The action lock function can be useful depending on what game you are playing
- Software can sometimes be a pain to learn how to use it - Scroll wheel has some resistance to it at a certain point when scrolling - After some time the braid around the cable started to break and the cable came through the hole in the braid.