I have a mad cow show bridle and matching breast collar. From the companies website they said that only so many are made per set so it is guaranteed not to overly mass produced. The leather is Argentinian leather- not sure what kind of quality that would be but with a little oiling it is ready to go like any other piece of equipment. Everything works on it. I guess the only thing is that on the bridle along the cheek, the tooling does not match up perfectly on both sides but thats not a big deal- in fact most people wouldnt notice but I look close to details.... I am picky that way lol I havent put it on a horse due to weather and this winter being so miserable so I cant attest to durability yet.
IMO I see nothing wrong with their breast collars and bridles but personally would not buy a saddle from them if they made them due to them using argentinian leather and will most likely skimp out on other quality materials.