This is hands down the most thrilling ride on the Stratosphere, beating out the kinda boring SkyJump by far as well as the stupidly glorified "merry-go-round" called Insanity and the barely okay X-Scream.
I love how it's not just a drop tower, but it reverses the speedy vertical movement.... you shoot up fast (just 45 miles per an hour but going up that speed is a very different sensation than going down that speed which would be kind of boring) so that you feel some weightlessness and then you drop down fast and continue this movement 3 times or so but at shorter lengths. The fact that the ride is on top of the Stratosphere did not make a difference in the thrill to me because you have a whole lot of ground on top of the building to see that detracts from the fact that you're up so high. Plus, I don't think it would matter much otherwise. This ride would be just as good on ground level.
Overall, it's a good ride that just barely makes it 4 stars. It's more like a 3.5 stars, but I rounded it. It could always be much bigger, faster, and not shorten the additional bouncing so much. But then, it would probably scare off too many other people, and they wouldn't have nearly as much business.