Jonz, your bike sounds AMAZING in the vid! I also like hearing you laugh when you come upon the surprises in the trail, cool! Do you remember if you were using the waterproof door or the open one on the GoPro? The sound on mine is not that good, but maybe it has to do with the speed. Not much wind noise at the alternate-trail rate of travel, eh? I wish my helmet cam mount would've survived, I didn't get any vid of the alternates, and I wish I did.