I owe somone on this board a beer, as they sent me theirs cos they didn't get on with it.
It's quiter than my Arai's, but I found the bottom of the visor ended up with condesation on it - you had to keep flipping the bottom vent open to celar it. I can only assume it's from me breathing out. Know I'm not the first to mention it.
Bit of washing up liquid or other fancy named posh product may stop that happening.
Apart from the that, the vents work very well.
Might try and sort the visor issue and use it in the winter