I have purchased the following socks in the past year to compare warmth, dryness, comfort:
Smart Wool
Wigwam "At Work DuraSole"
Wigwam "Merino Comport Hiker"
Wigwam "Everyday Fusion"
Fox River "AXT
Fox River "Wick Dry Off Road"
My working condition are behind a desk, a cold floor, my feet sweat easily.  They are usually wet in 1-2 hour period with normal cotton socks.  Needed a balance between breath ability and warmth.

NOTE: I discovered that the shoes needed to vent as well as the socks.  Shoes were fixed with the following shoes:
Salomon Men's X Over LTR Hiking Shoe
Columbia Men's BM3558 Switchback Hiking Shoe,Mud/Voltage

My rating still applies regardless of the shoes used.
The following are my observations (5 best - 1 worst):
Smart Wool.  Warmth 5, dryness 2, comfort 4
Wigwam "At Work DuraSole" Warmth 3, dryness 4, comfort 5
Wigwam "Merino Comport Hiker" Warmth 5, dryness 4, comfort 5 Note: I still need to switch to dry socks in about 3 hours.  My foot size is 10  and the XL size is the best fit.
Wigwam "Everday Fusion" Warmth 2, dryness 2, comfort 3
Fox River "AXT"  Warmth 2, dryness 3, comfort 3
Fox River "Wick Dry Off Road" Warmth 4, dryness 3, comfort 3

If you are looking to keep dry I would select the larger size when in doubt.