Get the Hero 2, extra batteries (at least one and the battery bacpac). The bacpac lets you charge batteries in your boat with a cig lighter adapter. They are sweet little cameras. The Hero2 motorsports edition is what you need because you want that suction cup mount. I also use a go pole for my water line shots. They are great, before my video got x'd again by youtube because the audio you could see what they film like, which is incredible for the price point, size, and effectiveness of these cams. You won't be sorry getting one, but the Hero2 is an upgrade.
_________________________