My smh10 and Gp10 bluetooth unit have all around quiet audio, it unfortunately doesn't engine noise up well, but it does a good job of cancelling wind.
All in all you have to play with it, add sound deadening, move the mic, try different angles e/t/c. Every helmet is different as is every one's face.
I'm trying out a new mic tomorrow. I ordered some of the cheap ass ebay mics that bXd swears by. Hopefully it will work out OK for me as well. if not, it's back to the drawing board.