So far vibration dampening has been the number one enemy for me in this hobby. I have built quads that fly amazing (to me at least), but the part that always gets me is when it's time to isolate the camera from vibrations. I want to know what others are using as DIY vibration dampeners. I have already balanced the motors and props and tuned the quad so this is all about isolating a camera platform.
Currently I am using rubber balance balls in combination with a steel cable running through them. It works pretty good, but there is still a hint of vibration in my video and it is unreliable because some days are worse than others (I have video if requested). One of my main problems is balancing between too loose and too rigid of a mounting.

Some of the options I've heard of are:
-Vibration dampening balls
-Wire rope
-Stiff wire (David's Tricopter)
-Moongel
-Nothing
Currently I am using rubber balance balls in combination with a steel cable running through them. It works pretty good, but there is still a hint of vibration in my video and it is unreliable because some days are worse than others (I have video if requested). One of my main problems is balancing between too loose and too rigid of a mounting.

Some of the options I've heard of are:
-Vibration dampening balls
-Wire rope
-Stiff wire (David's Tricopter)
-Moongel
-Nothing