My son has the Jump Smart trampoline (we got it from target.com last year for Christmas). He absolutely LOVES it. He gets on it every morning before school to exercise. The music is a little bit loud, and there is no volume control, LOL. It plays music or counts when you jump. I remember it being a little bit hard to put together, but it was well worth the money we paid for it. My son was 6 when we bought it, but all of my nieces and nephews (and all of my son's friends) who come over are immediately attracted to the trampoline. Definitely a good investment, IMO, and very stable so you don't really worry about them getting hurt too much.