I have the Oregon head cam for a couple of years now but its not that good, I took it Tunisia last year and it was so hot the grease dried up on the rubber sealing O rings and the thing filled up with sea water, now I have no sound and the pic is very fuzzy now.
This is how I used to have my Oregon head cam, only trouble with these cams is there is no way of replaying what you have just filmed until you get home and check the card, normally the ground or a barrier.