I was long looking for heavy-duty mounts for my studio monitors. I own M-Audio BX8-D2, which now hang out with a fighting weight of 12kg per piece on my wall. The boxes have a dimension of 381 x 254 x 304 mm, so that is really really big boxes. Still, I can the boxing even inward so they rotate precisely focus myself in front monitor. The brackets are screwed with me, each with 3 screws into a brick wall and holding a rock. With the boxes on it, they are no longer visible from my sitting position. I can not say anything because I do not need it and I would have it not married to this colossus on the tilt function. The installation was very simple, only a few holes drilling, plug together and ready.
positive: + Very robust + Suitable for very large boxes (with me: 381 x 254 x 304 mm, 12 kg) + Almost invisible in the assembled state + Easy installation (3 holes must be drilled) + Justified price (comparable cost mounts quickly twice)
Who really wants to bring large boxes on the wall, is hereby certainly happy. For smaller boxes there are certainly smaller and more cost-effective ways, for my purposes, however, there are vrmtl. no better mounts.