Some other reviewers have complained that the Monatgeposition is too far out of sight when the phone is used as a navigation device and star deducted. This judgment I find unfair.
For the installation of a mobile phone it is the best possible position (without drilling or screwing). Anyone who wants to be right in Navi field of view, you should get a suction cup for window or order the radio navigation system in the car.
For all others, who do not want, this is the best solution.
The ProClip is a clean buy recommendation.