I've never worn an Icon but I'm sure this helmet has to be quieter. It is still louder than my Shoei TZR but the TZR is one of the quietest out there (probably b/c its fiberglass shell weighs a shit ton). The Shark RSR2 is pretty much the lightest weight full face production helmet out there. My Shoei feels like a boat anchor compared to this helmet...granted my Shoei is an entry-level helmet. I've only ridden for about 45mins with this helmet so I haven't got a good feel for everything but it seems to vent well and the liner is superb. It is made for racing and when you put it on you can tell right away...light weight, very snug fit, DOT minimum on peripheral vision. I thought the lack of of peripheral vision might bother me but I think its going to be a non-factor as I was able to adjust to it quickly.