Well, they look nice out of the box.
But there are a couple of bad design issues. They are very expensive for what they are - unfortunately I couldn't find any alternative for this kind of bottom mount.
I'm using it with LSX II speakers, and it's very difficult to avoid tilting down the speakers. Had to really tighten the 2 side screws with a lot of force (as much as I could do) to keep the swivel from leaning forward. And even then there's a little play left with has the speaker lean down a little bit.
Since I have it also turned to the side, the lean is very visible.
The photo shows how it leans to the right despite making it as straight as possible.
Second - if you want to turn it both to the side and down, it now looks crooked as the design swivel down is only straight forward, it doesn't rotate with the speaker.
Lastly - they keep the speakers further from the wall than necessary - see pic.