Tried several but settled on the Schuberth C3Pro. Expensive but lightyears ahead of others in subjective quality, quietness and ventilation. Very comfortable. After 3000+ miles I can honestly say I forget the thing is on! The pin lock "no fog" visor is amazing. Our climate is humid, and I never have problems with visor fogging regardless of conditions.
Thanks for all the input. Working with revzilla and will be trying lazer Monaco pure carbon. Got it for a great prize. Great high end features and very lightweight.
Used a Schuberth C3 Pro modular for the cooler and inclement weather on a recent NC - CA trip. Very quiet and comfortable for me. A bit pricey, but I wanted something very quiet. The optional integrated headset was good and paired with my iPhone.