How could I not weigh in on this one?
Machete vs khukri? Two different breeds as Joe pointed out.
For chopping, give me a hatchet. My hatchets are incredible choppers. If the khukris can beat my 14-15" hatchets then I'm really impressed. But for sure what they can't beat is my price. You can buy a Granfors Bruk for $60. And try using your run of the mill khukri to pound stakes in the ground. Can't do that with a machete either. But a hatchet isn't much good for clearing thick brush. Machete or khuk depending on the nature of the brush. I have a heavy duty Barteaux that I've used for umpteen years to do everything from decapitate chickens to clear trails to my tree stand in the swamp. Great for clearing shooting lanes as well. Right now my favorite machete for this kind of work is a stout little 12" Barteaux. This is a handy tool and great bang for the buck.
So it all depends on what you want it for. If you want to shake up the people in the next tent, who seem preoccupied with their portable TV, get a khukri. If you want something useful under normal camping conditons, get an SAK and a Grohmann Camper. Or grab the butcher knife from the kitchen block.
Here's another knife that's rapidly becoming my favorite for a camping situation. I've been using it in the kitchen on a regular basis and it can definitely slice and dice. Cuts tomatoes and bread like it has a serrated edge. It's an opinel #12.
I think some people confuse camping with taking the kinds of trips that Jeff Randall does. If you are out camping, your best survival tool is a credit card and maybe a cell phone. If you go into the wilderness, then you might need something that will chop, assuming you are suddenly in a "survival" situation. If you've ever been hunting in the Rockies in late fall, then you probably know how easy it is to get lost. If you have to spend the night out in the big country, then a quick, makeshift shelter may be in order.
And I suppose this could be true of regular camping trips as well, if you plan to day hike away from well marked trails. I've gotten "lost" more than once chasing morel mushrooms in the toolies of northern michigan. In that kind of situation, you need something stout enough to cut sapplings for a shelter. Here my vote is for a Busse Badger Attack. You chop with it by whittling a mallet (baton) and use it to beat on the spine of the knife. In a very short time you will have enough saplings to make a frame for your shelter. And it's small enough to do a lot of the camp chores (but a little thick for vege chopping but will get the job done), but not so big to scare the sheeple camping next to you. You know, the ones who were going to invite you over to drink their beer.
If all you are planning to do is sneak into the woods and start defoliating things for the fun of it, leave the knives at home and get one of those portable tv sets...
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Hoodoo
The low, hoarse purr of the whirling stonethe light-pressd blade,
Diffusing, dropping, sideways-darting, in tiny showers of gold,
Sparkles from the wheel.
Walt Whitman