Watching that show has really put a lot of gear in perspective for me. Shelter and water are needed on that show way more than any cutting tools. Improvising a waterproof shelter and getting potable water is tough on the cast. The few days they lose while building a shelter and trying to improvise a way to clean water, seem to be the hardest on them and they never really bounce back from that intial shock to their systems. Makes me really want a tarp and a metal pot over most other items. In my own gear I try to keep those lessons in mind so I carry at the very least a metal cup and /or a metal bottle for boiling and a space blanket, large garbage bags, or a tarp is a must. fire is a very close third to those items and after those things are in the kit, I start wondering about knives, axes, and saws. Now if we are talking just about the kcutting tool choices, I'd like an 18inch machete. It's an almost universal cutting tool for the places the show goes to. No specific brand really but something in what is commanly known as a Latin pattern would serve me most anywhere in the tropics I'd think.