High Five! :grinMy usual helmet is a Nolan N21 Visor
With the visor up (but the tinted "goggles" down, or with glasses for eye protection) it's reasonably quiet behind a stock windscreen and ventilates well. The visor doesn't get flipped down by airflow, surprisingly. With the visor down, you may want earplugs, and in cool and/or humid weather it fogs up. That said, just look at it. Look!
When I'm worried about fogging or when prudence dictates a bit more margin of safety, I've got a HJC IS-Max with a pinlock visor.
I've added a home-built Bluetooth headset to it, made from an Antec Smartbean Bluetooth receiver and a cheap set of headphones.
Since my last post some things has changed. So for summer riding I'm still using 3/4, but Tucano Urbano El Mettin (I really like color)
And for winter and touring riding I've purchased first version of Lazer Monaco Carbon - lightest flip-up:
Here is nice review for Lazer Monaco on WebBikeWorld: