Another benefit of wearing a helmet is "ear protection." Take it from a rider w/hearing loss - air/wind noise over time is your enemy & it's irreversable.
I always wear a FF helmet, but heard/read alot of riders who like/recommend helmets from Lick's Cycles. Claim to be low pro - might want to take a look: Helmets-Novelty - Custom Sportsers, Bobbers, Motorcycle Parts and Accessories From Licks Custom Cycles
I agree on the ear protection, I personaly keep cotton balls in my pocket. I tear a piece off and put it in my ears, and it stops the hard wind from entering my ears and I can still hear and talk to my buddies as they pull up along side me like I dont even have anything in them. WORKS GREAT!!!