Here's yet another magnet convert.
My videos have been unwatchable for at least six weeks...something came loose in the OEM windscreen mount, I guess, but a couple of disc, rare Earth magnets, some 3M tape, a Sharpie, and some epoxy, and I now have the most solid mount I think is possible on glass.
FWIW, I've tried two from eBay, one from Amazon (recently), making a hybrid mount per another thread, and a RAM.
This one, though...it's the only mount which is 'tight' to the roof and the camera/mount is still quite easily portable.
Think about it...you're always aligned in the roll axis, too.