I have Tramontina machetes in three sizes: 10", 12" and 16".
I've made sheaths for the 10" and 12" out of heated and shaped polyethylene water pipe. The sixteen-incher lives in a commercial sheath made out of synthetic fabric.
Here is a ten-incher with a leather sheath and a home-made pipe sheath. I prefer the pipe sheath by far. I gave the leather one away, even though it was really expensive.
The 16" is my choice when I have to cut lots of prickly scrub, but for an everyday companion when hunting or trapping I like the 12"... although the 10" will do most things the 12" can do. I have modified the points of these machetes to make them more useful for sticking a pig if necessary.
A couple of months or so ago I was setting some pig snares. I walked back the way I came, and found a feral billy goat in one of the snares. I used my 12" to despatch the unlucky animal which was caught in a snare I'd set maybe an hour earlier. The adult goats I've been getting around here have been fairly tough, but it is good meat to feed the dog.
I kept the goat horns, and I took a photo of them so I'd have a dated record of the hunt on my computer.