base layer questions

[Jens]

I've always just bought the cheapest polypro long underwear tops and pants (rei, sporting goods store, ore whaterver) and saved my $$ for the other stuff -(softshells etc.). Does a $70 polpro top really make life much better than a $9 one?

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Also on fit, how snug do you like your base layer? It seems like I stay warmer with a snug layer but it also seems restricting and confining compared to loser layers.

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I guess this is a portion of gear that I've never given much thought about.

Any other tidbits of advice for me?

[Nick]

Yeah, wool is best. Snug without restricting movement. Comfortable over a broader range of conditions. Doesn't stink. Expensive wool is not scratchy.