Having worked with several ergonomic vertical mice, I can say that this is by far the most comfortable. Of course, it takes time for someone to get used to it. The mouse is truly designed for what it is meant to do, to help you work endless hours without straining your hands.

It has many buttons and is customizable so that someone can adjust it to their liking, and despite its size, it is capable of precise movements with design programs, etc.

The problem is that for my own use, it lasted two years until the buttons started sticking one after the other and eventually became unusable, lasting less than the 15 euro Chinese ones. In other words, they sell a very good design that does not match the corresponding build quality. If you believe that it is worth 100 euros every two years (with heavy use) for the health of your hands, then it is simply a one-way street, otherwise there are countless much cheaper options.