I bought it as a second throne for my other kit, and as you'd expect from Tama, the quality is great. I can't notice any bending, squeaking or shaking when sitting on and moving around. The bolts are all very nice and lock very tightly.
The material is comfortable to sit on for longer periods of time too, for some people it might be a bit too hard. I'm used to that and prefer it that way, since I feel more stable on it.
I don't really have any complaints, it's a throne and does it's job very neatly.