We've been tossing up a trampoline for a few Christmases now. I think we'll be going with a vuly - we just can't justify the larger price tag on a spring free. If your kids are going to be using it extensivelyfor gymnastics, maybe the spring free one would suit you guys.

Edit: I've just read a choice review on trampolines. Spring free was the only one they would "recommend", saying that all the others failed a safety test. On closer review, the safety test was an impact test - after dropping the trampoline 20 times, every other tramp showed permanent damage somewhere, the spring free did not. So, I'm pretty sure I don't plan of dropping my trampoline once, let alone 20 times. And if it gets whipped up in a wind storm and dropped, I will be sure to claim a new one on insurance.

Anyway - the vuly compared well, impact tests aside. I actually think it compared better - 150kg max load versus 75 for the equivalent spring free model. I'm 75kg - if I got on, my kids couldn't, on the spring free. DH never could, not even on his own! And the price - the spring free was twice the vuly.

Also the vuly was rated as having the most exciting bounce characteristics out of them all. And easiest to assemble.