Funnily enuf, I was at MCA on Thursday to buy some chain gel, and ran into the Arai rep in OZ (I think). Anyway, had a long chat with the bloke, nice guy, and he told me LOTS about helmet fitting. For instance, Aria is the only helmet maker who offers several different head shape profiles, i.e. round, oval, etc., and correct fitting to head shape can reduce noise. He said he always wears ear plugs anyway, so I wonder how much the head shape matters, in regard to noise

He also confirmed what jonno said about noise coming from the REAR of the helmet ( I didn't mention it first, BTW) and, on the subsequent ride, I tried shoving my hand around the back of my helmet at ,say 100kph..or so, and it seemed to cut out HEAPS of noise, much more than the front. Anyway, more research required.
