I have the Arkon one with the flexible tube. So far it's annoying because I end up moving the position of the mount every time I take the phone out. I can see how that ball joint will loosen up after a short time. It also shakes on slight bumps compared to my specific HTC Incredible mount, and I thought that was shaky. Might have to try one of the other ones without the tube and one with the slim or mega grip.