I have been recently recommended to go the Merino base layer way. Bought my self and my girl friend some icebreaker base layers. They appear very well made and durable. From the limited activities ive done in them in spring they seem very good. I will be trying them in snow conditions in a couple of weeks.
A couple of my bike riding friends swear by merino and wont touch anything else
The cheapest Icebreaker stuff ive been able to find has been at this store, pretty sure they ship world wide
Nature Shop | Eco-Friendly Brands | FREE Shipping Both Ways