I read many a GoPro Hero3 Review online before purchasing mine. There are a few things you should know about the camera first before buying one.
It’s really a great product, exceptional value for money. The machine is very well made, compact, only quality materials and operation is perfect. The movies have professional quality and you can have excellent results in post-production with some special software. Tested in water (swimming pool + sea), hiking, mountain biking and paragliding. Just fantastic. One flaw the poor battery life especially with touch screen mounted. Finally, contrary to what I read on various forums, the logic is very simple.
Finally, you can find good deals online for these. I found a great deal here (check it out).