I use this stand as an extension in my home studio, which means it stays where it is. Once set it feels solid and sturdy enough, but I have to say I was a bit worried when mounting it the first time. The 3-adjustment-point system is a bit awkward to manipulate with only a pair of hands and it looked like the joints would just break when tightening the screws. Now that it's installed I wouldn't take it down for fear it might actually break after only a few mounting/un-mounting. In short, it's okay for studio use, when you don't have to take it down once set, but I wouldn't go for it for gigging purpose.
I needed a solution to stack my Stagepiano with a Mini-Synthesizer, so I bought this realitve cheap solution. I use it with the Millenium KS-2010 and it was easy to mount the Millenium KS-2010 Ex on it. It's stable and doesn't move if you locked it, but it's a little bit annoying, that you've got three "Fixpoints". Also it doen't have a Quicklock for previous settings, so you have to adjust it every time. Further you have to get it exactly parallel, because if one of the legs isn't as the same height as the other, your keyboard is going to wiggle while playing, very annoying. But after a while you're going to habituate with it. So it's a cheap, stable solution, though, I wouldn't buy it again.
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