Good to hear. I'll probably buy one after my 470 is ready for replacement.
About the lack of foam in the front vents and such... with dust I haven't noticed any difference compared to any other helmet I've ever worn. I've run Shoei, Klim, Oneal, Kali, and my current LS2 MX470. I ride in the Sonoran desert (Southern Arizona) and it's dusty probably 99% of the year. Even if there was a difference dust wise I would still go for any extra cooling I can get.
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