Dunno, the cold steel machete's look like they were contracted from Tramontina. They aren't made for cutting hardwoods really, best on vines, banannas, other soft vegetation. The tramontina factory edge is designed to work best on those sorts of things, it's really a bit thin for working hardwoods. I've put a convex bevel about the same width on mine and they've never been a problem unless I hit a rock, and that sharpens out on a belt rather easily. How much are the CS machetes?? Tramontina's around here run 5-15 dollars a piece at the flea markets.
If they "are" tramontina's, which they seem to be looking at the blade shapes and steel used, they're virtually indestructible. They often come with a very thin but poor (read large visible burr) edge grind, but for the price what do you expect. I usually sharpen mine before they first get used to get rid of the over-ground steel at the edge. They are hardend to a very flexible spring temper, I've bent mine to around 170 degrees and they spring back to true, this is mostly because of how thin they are, roughly 1/16 of an inch, this is with the 18 inch blades mind you, shorter ones will be stiffer. There's very little mass, but you can develop excellent speed to power through light vegetation. The low weight also reduces fatigue, you can use them all day without your arm tireing. They don't do so well chopping woods, no matter what edge you put on it the blade will just bury itself into soft woods like pine and be difficult to remove, on hardwoods the low mass results in poor penetration "and" binding (it won't damage the edge too much as long as your technique is good, you should be able to cut 2 inch branches with one clean swing). I generally go for another tool if the machete can't cut through whatever it is in one stroke.