I've been eyeing one of these for a while now: Pocket Bushman : Cold Steel Folding Knives / Pocket Knives
I saw one at a gun show last year for $20 and I'm kicking myself for not picking it up. The lock mechanism on this thing is beastly.
I keep a Mora Knife and an Arkan-Saw in my car at all times (along with a few wrenches, mylar blanket, jumper cables, cable ties, para cord, meal rejected by Ethiopian, etc). This seems like it might make for a decent replacement for the Mora knife or at least for a good rough use knife for camping and yard work.