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 "Everday Fusion"
Fox River "AXT
Fox River "Wick Dry Off Road"
My working condition are behind a desk, cold floor, wet feet in 1-2 hour period.
Obersavations (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.