I love my tramontina. I've been using a 24" for many years, and have a backup waiting to replace it when it's done. Nowhere around here sells them any more, so when I saw one for sale, I jumped on it. Now you can get everything on the internet, so no big deal. I'd really like to try out the cold steel 24, and some really nice looking ones from Imacasa that I've seen pictures of, but I probably won't because my Tramontina gets me by quite well. I've used a lot of machetes before. My tramontina beats the hell out of any of that corona crap they sell at the hardware stores (though I do like Corona's folding pruning saw). I worked on a farm that had these big heavy machetes with triangle-shaped tips, and those things sucked big time. I once had machete with a 27" blade that was bulbous at the tip. That was long ago, but I seem to remember that thing kicking some ass, but it was stolen very soon after I acquired it, and I've never seen one like it since. Other than that one, I've never tried anything that comes close to the capabilities of my Tramontina 24". People are amazed at what I can do with it, and I'm amazed at how cheap they are.
I've resharpened it so many times that I had to check my spare to see what the original edge is like. It's a single bevel that's about 1/4 inch wide. The grind is straight and you can see the marks from the wheel or whatever, so it's not a smooth finish. The bevels on each side don't always meet in the middle, but it's close. You could cut stuff with it, but don't expect a great factory edge on a $6 machete. The metal is pretty thin and tapers slightly. I measured about 1.5mm near the handle and just a hair over 1mm by the tip. It's got a good spring to it.
I keep mine oiled with mineral oil. Sometimes I forget to clean it after cutting stuff that's got moisture in it, and it gets a bit rusty. I scrub it with the scrubby side of a regular sponge with some dishsoap and it cleans up pretty well, though it's got some blackish stains on it.
I used to sharpen mine primarily with a $5 scraper thing with the crossed metal things and crossed ceramic things. I recommend avoiding the crossed metal side, as they tend to catch and rip chunks off the edges of some of my knives. You can also get a single-metal scraper with a handle, that's advertised as being for clippers. The scraper is a hardened square piece of metal welded onto a handle, that you just scrape the corner along the edge of whatever you're sharpening. It's great for clippers and a shovel blades and I've used it on the machete too, but you've just got to be careful about building up a bur on the other side, or careful to get the previous bur off on the last stroke without putting a new one on the other side. It can be tricky. The last time I tried to use my crossed ceramic sharpener, it kept putting a bur on one side and I couldn't make it stop, so I said F' this and went for my new diamond files. I'm really liking these diamond files btw (Chef's choice diamond sharpener file set with three files). I strongly recommend against using a mill bastard or coarse anything on these unless you want to totally reshape the bevel, and I don't know why you'd want to do that. Coarse files are for taking off a lot of metal to reshape an edge, not for sharpening. I only used the coarse or medium one on the end of the tip, where the bevel ends, for some reason (doesn't any more), and the tip was blunt. I used the fine file for most of it, but then I'd already resharpened that machete so many times, so I might have used the medium grit one first if I was putting an edge on a new machete. After that it goes to the strop.
I recently built a few large leather strops, but I can't figure out how to use them. Everything I try to sharpen on them gets dull instead, maybe because I'm pushing too hard and the leather curls up around the blade and dulls it. I tried going really lightly, but then it just doesn't do anything at all except waste my time. My preferred technique currently is to get some card-stock or piece of a file folder and tape it to the counter top, rub the green extra fine compound all over it, scrape off the thick clumps of compound with another knife, and then strop on that. I can push as hard as I want because there's nowhere for it to give, and it takes off metal real well. That makes the paper into basically a 20,000 grit sharpening stone. It polishes up the edge real nicely. I still haven't figured out how to sharpen a knife enough to shave my face with, but the arm hair comes off fairly well. Facial hair is much thicker and tougher. I can scrape bits off of my facial hair, but you couldn't call it shaving. One of these days I hope to get my cutting tools sharp enough to shave with, but for now they still work pretty well at the arm-shaving level of sharpness.