Been wearing 'em for years on longer runs ..... funnily enough you tend to find it worse with fours ... twins tend to be a much "friendlier" noise to the ears (even mine )
Helmet style probably has the bigest impact, often the "best" ones being the worse the smoother the shell shape (less vents/fins etc.) the better
My old AGV Quasar was probably the quietest i've had, the Shoei I have now is definitely noisier.
Of all the things I have ever lost, I miss my mind the most .....
Handle stressful situations like a dog - If you can't eat it or play with it, pee on it and walk away
)