I have been using my bellicon rebounder for some time now and I absolutely love it. When I first received the rebounder, I thought it was a little stiffer than I imagined it would be but it quickly loosened up. I'm really happy I upgraded from my JumpSport which was only available in the 39" size. The extra 5" really makes a difference in my workout and the bounce is not as stiff because of it.
Another great feature that is much better than my JumpSport is the way the legs easily fold up to allow me to quickly store the trampoline after I use it. On my Jumpsport, I had to use a tool to unscrew the legs and it took about five minutes instead of the 15 seconds it takes with my bellicon and doesn't require a tool. The design is also very sturdy and doesn't squeak at all.
My only complaint, is about the high cost of shipping the rebounder. There isn't a showroom in San Francisco where I live and so I had no choice but to pay for the shipping. It originally, prevented me from purchasing the bellicon because it felt as if I was being ripped off by the high cost and is why I purchased the JumpSport instead which had free shipping and seemed like a comparable product. I'm glad I switched now though and I'm no longer getting pain in my knees and don't feel like my spine is being impacted anymore.