Eric
For reference, Im a software engineer. The OS I used setting this up is Windows 10. I have used multiple "fancy" keyboards and mice over the years and highly value speed and ease of use, as well as comfort when working with a device for long hours (sometimes too long). When this mouse arrived, I was really pleased. It has a great feel, and look, and glides effortlessly. I was really excited to set it up. I spent a day using it and really *wanted* to keep it, but in the end decided the flaws were fatal and could not be fixed. 1. The thumb wheel is terribly inaccurate. A small push sometimes sends signals well after the wheel is stopped. Other times, a large push wont be registered at all. I would have loved to set this up as a way to scan quickly through browser tabs -- but within a few hours I realized it wasnt going to work. I could never land on the tab i wanted, and would sometimes see the tab fly even though the wheel was stopped long before. 2. The thumb buttons are too small and too hard to push. If you bend your thumb awkwardly to push them with the tip of the thumb, they can be pushed; but using the side of the thumb is nearly impossible to do quickly or accurately. 3. I really liked the idea of the gesture button at the base of the thumb. However, the pressure required to push there is too great, and the amount of movement required to trigger a gesture after pressing is too large. It makes using the button and gestures too much of a break from the flow of working, and meant that my gestures were often ignored because I didnt move all the way across the mouse pad to trigger them. Yuck. In the end, if the thumb wheel had worked really well, I think I probably would have kept it because I liked the feel of it that much (although, I honestly probably shouldnt have considered it because those damn thumb buttons would have given me a repetitive stress injury...) Its such a shame though.... it *could be* a really amazing mouse with a few fixes and tweaks.