I must admit that I tried several alternative mice, and they were almost always more ergonomic, but the convenience of the touch gestures and the fluidity of movement, always makes me come back to the Magic Mouse. It's a matter of taste, of course, but I find it more practical. However, I don't think that there is a valid reason to update from the older version. The Magic Mouse 2 is just an improved version for new buyers. I still think that Apple could have avoided this update since the improvements are marginal at best.