My first mouse of this kind. Impressions are ambiguous. First, it's very lightweight. Maybe this is a plus for someone, but I'm used to heavier mice. Secondly - bare faceless plastic. There is nothing to catch on - no ribs, no rubber inserts. May slip out of hand. Clicking buttons is just a hassle. I have never heard such loud clicks in my life. I would gladly trade it for a simple ergonomic mouse with silent buttons. But the slide is great. And the sensor is definitely very good.