I had one of those al’cheapo $20 thumb last year, just for fun and see how well they work. Those are “ok” but the video quality is really passable at best.
As I was searching a for a better alternative so I don’t have to spend $200+ for a GoPro HD, I found the “808 HD Key Camera #11”; weird name but who cares when this thing is $40 shipped with near GoPro HD video quality. :wow
Here are a bunch of video about the camera. This thing is great for trackdays as it is tiny and very light and had a very low profile, it can with a car adapter so you don’t have to worry about battery life.
Make sure you watch those in 720HD. Enjoy!
Camera review:
More test footage: