I just got my iGRIP ROK Mount in today. This is a very solid mount that has zero vibration when driving. I drive a 370Z and my car has a pretty tight suspension but I didn't experience my phone shaking in the mount at all. I previously bought a Scosche universal mount at Wal-Mart, but it has a bendable arm and it shook like crazy. I have some pics of possible mounting locations on my windshield, along with a video of showing a movie and the Slingplayer app.