I have several different generations of Gurtwickler Rademacher with me in use, and my mother also has various installed. Now my mother needed at a window a new winder and I ordered her the right. All in all, the quality speaks for further Rademacher. But what the developers were thinking at the menu prompts - probably not much, because more complicated, it was not well. With so high-priced products you can probably expect more, and the operation via "buttons" is not the worst. Because of the price I am with three stars, because the company sells at lower prices Schellenberg devices that are similar to the slight-to-use predecessors by Rademacher in appearance and function. Customer needs is quite a simple operation and reliable technology. All nose long a new range needs no man.