The old saying you'll often hear falsely stated is "a machete works great in the South or in a jungle, but up North you need an axe!" However, an axe is really only good for dedicated limbing and felling of woody targets, and it would be absolutely miserable trying to clear puckerbrush, bushes, and any form of lush vegetation with one. Bush hooks and scythes are great for lush or lithe targets when you're on the homestead, but are specialized tools, and if you need to do work out in more remote locations away from the tool shed a machete packs the most general function into the easiest to carry package.
Picking the right pattern of machete largely depends on what you intend on doing with it. Fortunately there is a lot of functional overlap with machetes in terms of the range of targets they CAN handle, but the question is what are they OPTIMIZED for? With as many strokes as you'll be taking during machete work, the efficiency (or lack thereof) does stack quickly! Think about what tasks you'll MOSTLY be doing with it, what tasks you'll be doing SOMETIMES, and what work you'll be doing RARELY (but still require it to be able to handle, if not excel at.) Longer blades are generally best for heavy volume work as they get higher tip velocity while also pushing the balance point and sweet spot forward, improving performance in both lush vegetation and on woody targets, but at the expense of being less portable, nimble (though this can be compensated for with experience), and weighing more. Shorter blades can often still chop well if given a large flare to the blade or stock thickness is increased to give the blade more mass, but at the expense of performance on lush vegetation. In order for shorter blades to do well on lush vegetation they typically need to be made so light that performance on woody targets suffers as a result, as well. In general, a blade of about 18" is your bog-standard "do-all" length that balances performance against portability, but I find about 20-24" really excels in volume work, especially when the right pattern is selected for the job. The issue with longer lengths is that distal taper is essentially mandatory for blades over 18" in length or else they become either floppy or excessively heavy/dead in the hand. This limits the number of manufacturers you can trust for long blades. Imacasa of El Salvador (the parent company of Condor) is my preferred choice, with distal taper, good hardness, a wide range of patterns and lengths, and lots of handle options, including injection-molded polypropylene, which is my preferred type. Other good brands are Incolma/Gavilan of Colombia, Hansa of Ecuador, and Tramontina of Brazil (no distal taper, so 18" or shorter blades only.)
My Baryonyx Machete (a new run of which is in progress currently) was designed with North American temperate zones in mind, with a 16" broad chopping blade and hand-and-a-half handle for handling up to small trees without issue, a usable point/batoning shelf, and a back hook for lush targets that would want to slip off the compact, low-tip-speed blade, holding them aggressively into the edge instead. It has lots of other features and uses, but I won't run a full infomercial here -- suffice to say that it was made as a practical work tool for making jobs in the woods pleasant with the WIDE range of targets and environments we have in our region.