My ultimate light in anything option is the lifeboat match, (You know them in as the REI match). With a esbit or Wet-Fire cube that I have just crushed.
One thing I have found out about them that is interesting: They are normally sold in one of two containers. A conventional matchbox or a sealed tub. Don't go for the sealed tub. Unless they are for use at sea. The strikerboard on the tub is much smaller than the one on the conventional matchcase. That makes igniting the match much harder. The ones I have ignited on the normal striker board have lit the first time, every time. If you need to waterproof the matchcase, a small ziploc plastic bag of the type used for small electrical parts, say 4" x 4" or there abouts, works very nicely.
An esbit or W-F cube delivers quite a lot of heat on its own. Which is a significant consideration.
One other consumable that you should have is the single use chemical heat packs . They allow you to rewarm a hypothermia victim in situations where the classic put them in a sleeping bag with another person technique is impractical. (That's Brit-Speak for impossible). <img src="/images/graemlins/smile.gif" alt="" />