i have one and I like it. It is kind of hard to like get recording when its on your head but i think it takes good quality footage with the correct editing program and settings on the gopro. The pictures are cool with the fish eye and everything and have pretty good detail.
I have one and it is awesome. The durability is bomber. The video/photo quality is awesome in bright light, but the quality gets worse as it gets darker. Don't even bother using one at night. That's really the only disadvantage to the gopro IMO.
I would say go for it, its well worth it.
2bi4 is lightyears ahead of 4bi9, whens the last you saw someone build a house using 4bi9s? -jfletcher
i got one, its a huge hassle, the digital display is confusing, it randomly shuts off, getting the right angle is tough, and no view finder. Its a bitch. But its definitely worth it because the shots are amazing and it looks badass. GET ONE.