I know there are 100 ways to tie a buff, but I have trouble finding one. Seriously, my DH tells me I look like an Orthodox woman when I wear it. It makes me sweat profusely, so I use it in cooler weather, but not as cool as when I wear my fleece beanie.
I prefer the beanie/head sweat type head cover. I have a few in different weights. I got some really light weight ones that are made in Phx, so they are made for really hot weather. But, today, I had a slightly heavier one on and I had to take it off, even though it was 58, cloudy, and a little raw feeling.