The Roccat Kone Pure Owl-Eye is objectively one of the best mice I have ever used. Contrary to the Roccat Kone EMP, where I like the shape, but not the weight, it's the other way around here. But the shape is less of an issue than the heavy weight on the EMP, and with a different grip than I use, the shape should be fine for a lot of people.

The sensor performs perfectly; tracking is fine on all gaming surfaces I tested it on. I found the buttons to perform flawlessly, bested only by Logitech's separate buttons, like on the G303. The wheel is in my humble opinion the best you can find currently, both for scrolling and clicking. Build quality is also excellent as the mouse not only looks but feels like a high quality product, and the coating is just great to touch and also allows for a safe grip. So for me, I have nothing to criticize other than the shape.

I highly recommend everybody considers this mouse - there really is little competition if the shape suits you. At $69.99, you also get incredible quality at a competitive price point.