I wear a Cabela's polar fleece balaclava, the one that you can adjust to go over your mouth, or just the chin. I then have a pair of wraparound tinted safety glasses on a strap that then go around my glasses. Keeps me from getting glare headaches off the snow and keeps my glasses dry. I look like a Soviet fighter pilot, but I like it.

I have a filson wool hat with fold down ear flaps that is pretty decent for warmth, but doesn't hug close to my ears and neck. After seeing Mr. Mitten wear nit hats and also Don Thomas. That's also my go too, sometimes I wear 2 wool nit hat if it gets real cold. There also real easy to pack.

cool - stormy kromer
cold - grey wolf wool radar cap
really cold - KOM Bomber

When its super cold.. say teens/single digits with winds... I wear one or two fleece hoods depending on the amount of chill.  

Milder cold I wear my Kromer or just a boonie hat and bandanna around the neck to cover the neck (part not covered by beard or jacket).

May have to look into one of those heavyweight longhunter shirts...  they look like the bees knees for cold weather.    

Not to cold - fleece stocking cap.
Cold November - lightweight camo balaclava with camo stocking cap
Cold December stand hunt - add a camo fleece balaclava over the two hats worn in November.

Layering makes it easy to adjust to wind/no wind,walking to stand/walking out, etc.

I love my Stormy Kromer Rancher. My head hasn't been cold since I bought it.

Stormy Kromer short bill. When it's real cold I wear a balcava under the SK.