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For jungle/wet tropical forest environment you can't go wrong with a machete, all pros no cons. If you use the bend cutting technique a machete will easily handle anything up to wrist size.
Tramontina makes reliable and proven machetes. They are used by Australian Parks and Services in the top end rain forests, and all across Brazil and South America.
Best of all they cost next to nothing, so you won't feel like shit when you lose it. Make sure you put a sharp edge on it and carry a sharpening stone with you.