[Doctorossi]

As with most stuff, as you head toward the higher end, you're probably going to hit a point of diminishing returns. The better stuff is, the less room is left for improvement and the more expense is required to find/facilitate that improvement. A $40k Ducati "R" is not going to perform 300% as well as a $13k standard Ducati; it's going to perform 118% as well.