Brian:
I would go with multiple full sized bics to be on the safe side.
I know firestarters is the main question, but I believe the main consideration should be a portable shelter so that you don't have to depend on snow caves or evergreen tree rooms.
Beyond all that, you could relate those Texas jackrabbit tales out loud while walking out a distress signal in the snow. The heat from that amount of bull crap should allow you to make a rather large signal message as the snow on either side of you will probably melt away to a minimum distance of 3 feet. <img src="/images/graemlins/cool.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/cool.gif" alt="" />
Bountyhunter <img src="/images/graemlins/cool.gif" alt="" />