After unpacking, the trackball didn't work properly and was quite stuck. I opened the box and found that the trackball unit was full of dirt and very sticky. It was obviously already heavily used and not new. However, after cleaning, everything now works fine.
The many buttons are great, but only the 3 main Sanwa buttons work via Rawinput. An additional DirectInput controller is used for the other buttons, and they only work if the program used allows parallel operation. That's absolutely fine, as the trackball unit only supports 3 buttons as standard.
Otherwise, everything feels very good and is well built. The price-performance ratio is excellent. If a new trackball unit had been installed, I would give it 5 stars.
