Build quality on these seems good enough (although not amazing). I tested them with Beyerdynamic M201's. The pop filter prevents plosives as effectively as the Beyerdynamic wind sock, and it's smaller and less obtrusive than I expected from the images, which was a nice surprise. The shockmount protects very well against rumbles, bumps of the stand etc compared to a regular clamp. Only minor inconvenience is it doesn't come with a thread size adapter. Still seems like a good deal for the money, provided it stands the test of time.