QFE.

Just spent nearly $200 on a new Specialized S-Works. It was the one that fit my head the best, covered the areas that it needed to cover, was reasonably comfortable and wasn't as mushroom-like as the Giro or Bell helmets of similar size. My previous helmet was a Bell Sweep-R, great helmet, unfortunately I was a dumbass when I bought it and got a size smaller than I should have - because the large looked like a mushroom on my head. Seems the size of my head is just above what would properly fit in a Bell size medium and it never came down far enough on my forehead. The new S-Works is a large, and looks like it'll protect my noggin a lot better if I hit the pavement. I figure if I keep the rubber side down for the next 4 years, the helmet will cost me less than $50/yr till I'm due for a new one, and if I don't, then I'll be happy to have spent the $$$ on a helmet that fit properly, kept me as cool as possible in the Texas summer heat, and had the best chances of protecting the gray matter.