I use the gopro hero 3 it's older now but works great,all gopro's have an issue with wind noise and there is no way to edit it out according to the experts.Gopro has the gopro app but all that really does is allow you to control the camera via your phone and that doesn't work very well ether LOL.The other issue is that the mic will focus on any prominent mechanical noise if thats what it recognizes first just like many phone cam's and mic's so the only answer really to slove the audio issues is to use a filter our tape over the mic holes so that the exhaust or the intake noise is the loudest thing it hears.Next is yes a helmet mount makes for much steadier video and being further away from mechanical noise helps it focus on the exhaust/intake note,when my son is close to me with the MZ 65 pipe thats all you can hear my bikes sound is gone.