I sat in the back of Diamondback and was not all that impressed - it was not as smooth as I thought it would be. The future will tell, but I am guessing that DB will get a lot rougher as the years go by - and how do you re-track a steel coaster? The Beast could be around forever - and will change, too, through the years - but at least it can be fixed if it gets to be too much for riders to endure.