Get one made by Ontario, either 18" or 12" blade. They're the ones with the smooth black plastic handles attached to the blade tang with metal rivets. You can find them in surplus stores, some hunting/camping stores, and many online knife dealers.
Before you use one, make sure you take some crazy glue and run the glue around all the rivets and along where the handles meet the blade/tang steel. This will keep the handles from loosening or coming off. They are notorious for having loose, weak handles. Mine, a 12" model, had a loose handle brand new.
Besides the crazy glue job, rough up the handle with some medium grit sandpaper. Those plastic slabs are just too slippery to keep a secures grip unless you scuff them up.
Seems like a lot of work to fix up a brand new machete, but the steel and edge geometry are excellent for the intended use of the blade. Also, you'll probably be able to find them for under $20, maybe even under $15 (mine was just under $10 brand new). Once you do the modifications I suggest, you'll have a machete that excels in performance, as far as machetes go, with a lot of "bang for the buck."
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Danny
aka "kuma575"