Now your're asking, Marky! Like you I'm coming from an Arai and I've been meaning to try a different helmet for ages. I've got bad tinnitis, probably from not wearling earplugs when I was (much) younger although I've had custom earplugs made and worn them for a long time now (20+ years). I've been keen to try and find a quiet helmet. Much of the noise issue on an old R100GS is the screen and I'm about to make up various spoilers to see what I can do about airflow buffeting off the top of the standard screen which is the cause of 90% of the "problem". Of course all these things are subjective but to answer your question as factually as I can: with the screen exactly per the way I used it when I last wore my Arai, I'd say that the C3 is quieter than the Arai so long as the closure padding around the bottom of the C3 fits fairly snug to your neck. If I move my head so that the gap opens up at the bottom of the helmet (if you see what I mean) I don't think there's a heck of a lot of difference. Be interested in what you think.......
As far as other negative issues that others have raised, again simply being 100% factual (and I've not used it in the wet but at that money I'd be darn cross if it leaked...):
A) The front of the helmet is fairly snug to one's face and a bit of a fiddle to close over my chin with the chin insert fitted (maybe I've just got a big chin!!)
B) the visor is a fiddly chore to fully lock shut when moving. It doesn't seem to want to click into the final detent (there's a little snap at the bottom centre of the visor) using one hand. If you use both hands it's fine, but that's not really the point when you are moving! I've found that if you press down at a point about 1/3 of the way up the centre of the visor it will "snick" into place and lock but I've been having to hunt about to find the right spot to press to get it to shut and it's a bore. Maybe I've missed something.
C) the other visor settings seem to be fine.
D) The sun visor is a great feature but seems to be definitely off centre and hits my nose when it is fully down. I've never boxed so as far as I know my nose is still in the middle of my face. I'll look into that issue today.
E) It's a bit of a fiddle to get the flip-front to click right shut, the lock is worked by a Bowden cable and it's very stiff. Time, no doubt, will deal with that but I've had the helmet open and shut on quite a number of occasions when wearing it and at least half the time have had to really force the front to click shut.
Look, I don't want to put a downer on it for you Marky, that's 339 hard earned pounds in this day and age: you'll probably love yours as lots of people obviously do. This is clearly an utterly, utterly personal "thing". It's a well made helmet and it looks and feels "quality". But, all in all, I'm not (yet?), personally, terribly happy with it. Like you I got mine at a discount price (I paid a tenner more than you from Lids Direct in Watford, I did try Hein G in Eynsham but it was ridiculously cheaper to buy from LD) however I'm sorry to say that I would rather just have a no-nonsense high quality full face helmet that simply gives me good vision and quality protection as the noise issue is, clearly, much more a question of personal height/bike aerodynamics. Ben at LD was so helpful and friendly that I'm going to call him and see if he'll help me out. My other half likes the C3, though! Says it's nice to see my face (must be mad).........and they like it down at the post office when I did the daily run on the bike on Friday!!!!
Don't listen to me, though........
http://ukgser.com/forums/images/smilies/201108/blahblah.gif Enjoy when it comes!!!