Read about it for weeks and by the reviews "very shaky, vibrates at each floor unevenness, etc." put you off, tried four different mounts and returned disappointed again. Then I still gave me a jolt and ordered the Kensington bracket. Lo and behold, it wobbles a little, the extension arm is a bit long (in turn is beneficial for cars with pressed windshield). This can be by bending the flexible arm but very good balance. The Bumper can stay tuned on iPhone 4, the protective films on display and the back is not a problem due to the lateral shoe attachment. And the Navi announcements are actually a little louder! Prima, all in all I'm looking for the money, with the result more than satisfied.
