I have had the opportunity to play on several "like" devices and I have to agree, they are mostly good as noisemakers. Having said that, they can be a lot of fun to play with. My problem with them is that I had a hard time getting anything I really considered musical out of them. Others experience may differ. Also, they just seemed a bit pricy for what they did. In fairness to the builder, I would have to say if I spent hours building something like this I would want a pretty good price, too. I can't help but enjoy looking at devices like these. They are just so cool looking. Especially the Foltek's.