The Boker A/F combat knife is actually a heavy knife with a hollow handle having a small bar of steel inside to add weight -- the handle can be taken apart and the steel removed. The Peacekeeper II is a good heavy duty knife, as is the Gerber. I've used all three of those in hard duty, with only minor cosmetic damage. I just got a TaiPan, and it is one serious heavy-duty dagger, but I haven't spent much time with mine (other than to menacingly chase the cats around the house). The SOG is a lighter thin-bladed knife, and I've never put one to test, so I'll yield to the opinion of others on that. My new Fallkniven G1 is my favorite knife right now, but would consider it a backup to a much larger knife, if a chance medley were in the offing. The best aspects of the Boker and the the Cold Steel (besides ruggedness) are availability and pricing.