+ 1 for CSC Racing. Jennifer will take good care of you, she'll make sure you get the correct size helmet.
I found that helmets are like shoes...some fit perfect and others just don't feel right. For me it's Bell all the way!
2011 E92 ///M3 Alpine White / Black
2008 E93 335i Black Sapphire Metallic / Saddle Brown
1997 840Ci Jet Black / Black
2004 E46 ///M3 Laguna Seca Blue / Black