i always take an axe when i go camping, because i like a good big campfire.
but i am partial to axes- i was a firefighter, and also worked at a sawmill.
i have used a machete several times here in Belize, it is a must here. they are very very common here.
it's real crucial to keep it sharp, to keep it honed and sharpened. a machete that looses much sharpness is completely worthless.
the kukri looks cool. i have never handled one. it looks a little smaller than a machete, is it?
i would want the extra length of a longer machete, personally.
i can see if you are really trying to conserve weight/space the kukri would make a lot of sense.