the nothing but trouble of the dynastar line up will compare nicely to the scratch pro in the rossignol line.
the sprayer fs, which happens to be the previous scratch fs except w/ different graphics, would compare to the trouble maker ski.
with that out of the way, both r great all around skis that can rip ne where. im talking bumps, steeps, pow(if ur not 2 big), TREES(great in these), and of course park. in general, i would say if u were doing hardly ne rails/some park/mostly all-mtn, go with my boy the trouble maker. on the other hand, if u want to have a more balanced ski that tends to chatter more and lose an edge more easily, go with the fs. dont get me wrong, i cant say enuf about the fs, but thats how it is.