What is the best base layer
#16
I have always used under armor, I recently was told to wear a just a cheap long underwear set underneath them because most people don't order them at least a size bigger. Now they keep me much warmer. They always felt clammy and now a huge difference. I then have a layer from an armory surplus store, awesome set. They are olive green and ugly as hell but are super warm.
#17
I use a longsleeve HEATGear or 32 sweat-wicking layer (like you can find at Costco), then an Under-Armour compression turtleneck, and a loose Under Armour longsleeve shirt on top of that. On especially cold days, I put an adhesive HotHands bodywarmer on the compression layer, at the small of my back.