If you're looking for brand/manufacturer, I'd advise sticking with GoPro, but there are worthwhile alternatives.

My stock clip broke once, and luckily, it still held the GoPro onto the base, mounted on the windscreen of my motorcycle. I found generic replacement GoPro clips on Amazon, but they don't fit snugly; minor vibration wiggle. I made it stable by using the white, rubber clip stopper that comes with the GoPro.

If you're looking into helmet vs handlebar vs motorcycle body mounts, go on YouTube, check out videos, and see what view you want. I mount the GoPro to the top of my helmet, as it provides a view for what's in front of me, and I can see slightly above a car. Since it's on my helmet, it looks where I'm looking. This is an added bonus of capturing something that gets your attention (such as a distracted driver that doesn't seem to notice you), and providing evidence in the event of altercations.