I found that the goggle mount got a little bit shaky on me. I might try the adhesive one to get it to sit still a little bit more.
Agreed. Even if you have your goggle strap super tight, any drop or landing causes the camera to jiggle a bit and the video looks shaky. As a compromise, I use some velcro on the side of the helmet when I want to mount it on the side and that seems to work well.