I'm using these for my Neumann KH310 (together with mounting bracket LH25 + LH28) in my composition / production studio.
Small footprint, clean look.
Love the screw and safety.
There are a couple of pads around the base, so it's not going to scratch any floors and also doesn't need to stand on a super flat surface. They're made from some sort of felt if I remember correctly.
The stands seem very stable, though they are oscillating slightly when touched/moved/etc. I believe it's just slightly more than with traditional stands (fully retracted), so not a big deal at all, and I did expected this, given that they stand rather tall with no support structure other than the base.
(this is with the stands fully retracted and sort of near max capacity - the oscillations would probably increase when extended. Not much more than with traditional stands).
Not really something to worry about, but should probably be kept in mind when there is going to be a lot of movement around the speakers.