Soon as I've done my Christmas shopping and got back from holiday I'm saving up to buy some, but as they've got so many different names (powerisers, powerskips, jumping stilts, etc) I was wondering are they all the same? I'm a pretty decent trampolinist, weighing 8 stone, and wanna use them to do consecutive sumersaults and jumping over fences and high things and whatever other tricks I can think of. Are they all bouncy enough for this type of thing or do I need to buy a specific sort?