Agree with TD, I guess we Hinterlandians are just sensitive New Age guys: Icebreaker merino makes me itch, I have to wear synthetic under it. It is pretty toasty warm for the weight, though.
Patagonia Capilene is the best in my books, no itch, little to no stinky, lasts forever. I get cold easily, so prefer
Cap 3 for all purpose winter wear,
Cap 4 for cold alpine ski days.
Off topic: While looking up links for Capilene, I discovered that Patagonia is having a 50% off sale online, ends Feb. 27. Check it out
here.