Keep in mind that Rick is one of our friends from The Great White North, so when it comes to cold, he knows of which he speaks.

If you want to learn about serious cold weather camping, check out www.wintertrekking.com
It is great source of info for all kinds of winter gear and technique. Nothing lighweight about it, though, but don't let that deter you. I think Rick is the one who posted the link to it last winter.

ps. Rick, Did you get one of Harlan's little thermometers? They are very cool.