My vote goes to 100% merino wool from NZ. That's my preference for comfort. I also use polypro but find it less comfortable on a day in day out basis. If I were soaking wet the nod may go to polypro - but then again, I try to stay dry in those kinds of conditions!
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See 'Ya Down the Trail,
Mike McGrath

"Be Prepared" "For what?" "Why, any old thing!" B-P