I've always wanted a disco ball and so I was very pleased when I got this and found that it was the perfect size, the mirror faces are very secure and it has taken a little bit of a beating but has never lost a mirror face.
combined with the Varytec Mirror Ball Motor it does exactly what you need to to, it turns around and reflects , I'm not sure if there is something else it should be doing that I'm not aware of, but if there is then I didn't notice that it wasn't doing it because it does the rest of it's job so well.
I suppose I'd like it if it was hollow and I could wear it on my head, like a glittery Frank Sidebottom, but I won't let the fact I can't do that sway my judgement.