A couple of local friends have smallish narrow noggins. They like Kask, Catlike and Laser. One of 'em just got a POC, Ventral or Octal, but I forgot to ask him how he liked it.

POCs are excellent but tend to be a bit bigger in exterior circumference and look kinda mushroom-heady. And, per my experience and customer reviews, POCs vary considerably in fit between models. So be sure you can return or exchange it. My POC Omne Air Spin in large is a bit too large for my Frankenstein pumpkin, but it's okay with a knit cap or bandana as a cool weather helmet. I should have gotten it in medium.

Older Giro helmets were shaped and sized differently, but when Giro was bought by the same company that also owns Bell, it seemed like Giro helmets were changed to be more like Bell, although there are still significant differences between the two brands.