It is possible that the mouse may be improved if the top surface were made of a material that had a softer feel to it. In addition to that, I believe the slant of the roof of the house should be adjusted somewhat. The mouse is at the top of the list if you believe the filling, but they made a slight calculation error with the form. I wish you the best of luck with the upcoming models and I really hope that my opinion is helpful in any way. Many advantages: Pixart image 3389 featuring a lovely mouse. Excellent looking program with solid performance. Both the build quality and the overall appearance are exceptional. Cons: After about fifteen minutes of playing, the mouse keeps slipping out of my grasp for no apparent reason, which I attribute to the contentious architecture of the house. The side bands are not helpful in any way. Because of this, the sight turned out to be either higher or lower than the location where I had anticipated it to be when I moved the mouse along the black mat to the sides. Despite this, when I perform the identical motion on the other mouse, the sight does not become lower nor does it become higher.