For what it's worth: In Costa Rica the guides in the rain forest usually had two machetes - everyone had a Condor brand bolo style machete for clearing the vines and stuff that grew over the trail or canals overnight, about 15 - 18" long. It was used for doing everything from clearing out vegetation to knocking open a coconut.
Some also carried a shorter "Rambo" looking 12" knife. It might have been more of a fish / game dressing knife but it also chopped vegetation very well. Maybe the reason they liked it was that the Rambo was short enough to wear on a belt sheath and easier to carry. And it had a bottle opener.
I found both here. The Rambo is by Imacasa but Condor brand was their favorite for long machetes.