If I were you, I would avoid The North Face like the plague. I work at a backpacking store and we don't even care any equipment by them now because they are owned by Vanity Fair now. Not to mention that most of their clothing is "poser wear" for people who want to LOOK like they actually do climbing or backpacking. Oh yeah, and they also got in trouble a few years back for fudging the degree ratings on their sleeping bags. I just sold off the last of my North Face gear on Ebay.
The bag I now trust is a Western Mountaineering Ultralite. It is a down bag (weight is 1 lb., 9 oz./25 degree rating) that has a Pertex shell that does a great job at repelling water. Western Mountaineering makes several other bags, all of them goose down, at lower degree ratings. I highly recommend them because the only thing they make are sleeping bags. Not tents, clothing, backpacks, etc., etc.