First let me say that the vast majority of knowledge I have about the 700 exhausts has come from members posting here. That said, the 700 gains much more power from an exhaust than many other bikes just as the 660 did. Because of this it would figure that there is more room to differentiate these singles from one another than on a bike that only gains 2-5hp from an exhaust.
It would appear that the top-tier pipes are quite close in power output, it's important to note that there are still mediocre and not-so-great pipes out there so the selection is indeed limited. The mediocre pipes include many that are much more powerful in the low and midrange but don't have quite the top end power of the big singles.
I will leave it up to the more knowledgeable members to list these "top-tier" pipes.
...Or to tell me I'm full of it...
