To add to the Texas Helmet Count, in Austin, I have an Atmos. It got me through last summer and I didn't think my head was too hot, for me it was more about sweating everywhere and trying to stay well hydrated overall in the changing humidity. I mostly commute (12 miles round trip), do short weekend trips with my husband, and the occasional long ride in spring/fall. Up in the PNW, I have the Athlon, because it has green flames, and flames make you faster (right?). It's also pretty well vented, though not as well as the Atmos.

I am definitely going to check out that icefil cap. I had a coolmax one, but it was too thick at the brim and made my better-fitting helmets fit too tightly. I bought a couple of extra pairs of the arm coolers for riding to work in when it gets too hot. My commute is short, but anything that helps me cool off faster when I get to the office or home would be nice.