The form and function of Razer's Naga mouse have come a long way over the years. It's the latest version, the Razer Naga Pro, is the best yet: a small, comfortable mouse with a high-quality sensor and three interchangeable thumb grips, with button arrays ideal for MOBAs, MMOs, or general use.
       The MOBA array is the best, it has 6 buttons laid out in two rows so that there are enough buttons to map multiple abilities, but not so many that they become an overwhelming samey blob.
        This year's Naga offers an improved battery life and works with the Razer Mouse Dock (not included, sadly). The Razer Naga Pro is a bit on the small side for larger hands, with more of a squat shape than some gaming mice. It's comfortable in the relaxed grip suited to MMOs but will still do the job if you play MOBAs, shooters, or any other active games.
   Buy it here: Razer Naga Pro