Do a site search, Reason vs. FL, and you will get infanite topics about this. Its all bin said b4 so just do a quick search and you can read about fl vs. reason for hours.
i have both....i hate reason....Fl is way easier for me to use, looks better (not that that really maters), the plugins that come with are better (fl7xxl) , reason is more robotic imo......or you can use both and rewire like the other homie said