Honestly, spacers are just pieces of metal that sit on your studs. As long, as they are CNC'd and a quality metal, there is no way you can go wrong with any brand from any place. There are no moving parts and they do not hold anything on. Of course, its a little different if they come with studs attached to them, then I'd go with a reputable brand because you don't want cheap studs snapping and messing up stuff really badly.
