I've been using this helmet for about 4 years now, and I'm happy with it. I'd consider buying another one. It doesn't smell funny yet.
The adjustable vents can make the difference between getting sweaty and staying dry when ascending/descending a few thousand feet. I only need to wear a hat under this when it is less than -20c outside (night skiing in Ontario or Quebec)
The brim keeps the foam on my goggles dry in the rain. No issues with fitting Smith I/O and Oakley Airbrake goggles under there.
Like other matte black finished helmets, this shows all the scratches from getting bashed against boots, car doors, and skis in the trunk. Mine came with a protective fabric bag that I don't use often enough.
The form-fit system works well to keep the helmet from shaking around.
It is a bit larger than the older Giro G10. I wear a small Seam or a medium G10.