For around the same price, the GoPro Helmet Hero Wide is a far better option.
As it's a super wide angle lens the effect of "wobbly head" is reduced in the footage.
As with all things there is a slight compromise to the Oregon as the resolution is not quite as high (But still looks great on a LCD TV), and you can only use up to 2Gb SD cards for 1 hr of footage.
On the plus side, it comes with heaps of mounting brackets and will also take 5 mp photos every 2 or 5 seconds instead of video.
If you are in Perth, Launch Helmet Cams sell both. I've had good dealings with them.
If you want to spend more, then they have plenty more higher resolution options
www.launchhelmetcams.com/