CRK Shadow IV.

Nice size, practicaly unbreakable, can be used for MANY purposes and can store a striker or matches in the handle. It's pricey but you get what you pay for with this knife. Another vote is the CRK Neil's Knife, nice size and better girp IMHO.

Now I carry this as well as a Swiss Amry locking that has saw, knife, screwdriver, etc..