The bounciest trampolines are the professional ones. The reason is the MAT. Average shopping centre trampolines are made of a polymesh material. A professional trampoline is made of a 2 ply woven mat. This shoots the costs up, BUT they last forever – guaranteed for 10 years and they are far springier. Of course they cost approx $2000 – $4000. I live in Australia and was lucky to find this trampoline for $1675.00. http://www.topline-trampolines.com/tramp… (pro-jumbo with the 2 string mat) It is as bouncy as the ones used for the Olympics (those ones are made of a slightly different material, and are over $5000) For more information and pictures of the trampoline go here: http://www.online-trampoline-coach.