My conclusion after the first tests has proved very positive.
The time of the annoying marks on the windshield and falling suction cups thing of the past.
In my Audi A3 can hold the round up absolutely slip despite the slightly rounded dashboard. Strong starting or braking and cornering make strong the holder no problems. She stands and stands and stands. In addition, Navi leaves the holder incl. Also easy in another car up (greetings of fittings is important, min. 13 cm x 13 cm should be sufficient, but already, the bracket has external dimensions of 20 cm x 18 cm).
How does this support, however, behaves in a car accident, I do not want to imagine me. However, I do not trust to an accident the suction cup is not much more to safety.
For me, the acquisition was worth. I can really recommend this product.