We have 2; The first one we got 4 years ago online from jumpking. We ordered another one from them, but it never arrived, and soon after the company went out of business. We never got our money back. It has lost most of it's bounce, but still has all the springs, has no holes, and no stitching ripped out. After it lost most of the bounce, we used it as more of a place to land all of our big skills, so it has taken hundreds of big landings. The second one we got at walmart last year. It was extremely bouncy. We had it for about six months when the first spring popped off and became imbedded in our neighbors tree while i was doing a simple front pike. By the time we had had it for 9 months, it was missing 6 springs and the stitching was coming out in one area. We threw it away a month or two ago when we lost the 9th spring. It was still pretty bouncy, but it was too dangerous to use.
We are looking for a new one now. It is a lot cheaper if you get it without the enclosure, and if you try any sort of flip, it gets more dangerous to have the enclosure because you could strike the pole or get a foot, hand, or finger caught in the net.