Here we have a simple contrast with spring clip - so how's knows of ner good old almost unbreakable clothespin ... should keep a long time, and also makes a very strong impression. My Galaxy Nexus is absolutely kept stable, even with cables off, both horizontally and vertically. Pressure could be even a bit higher, so that the part in the off-road use (höhö, the thing comes in nem Corsa used: D) holds, but for normal use which is perfectly adequate.
It is important (I initially overlooked): The ball joint can "tighten", and then remains rock solid in the set position, despite only plastic in the whole construction. Also the suction cup (by the way, is a bit sticky ... good for unruly dashboards) and its locking mechanism to make a good, long-lasting impression.
