Camo Buff rules! I've got a First Lite and the Buff brand is better for me.
No seam, more length for use as a cap or balaclava, microfiber fabric works in all weather, dries very quickly, snug but comfortable fit for good anchor, never sags or stretches out. I've never tried the polar models.
http://www.planetbuff.com/shop-buff/collections/camuflaje-buff.html
