I think your definition sounds good Gaia. I go by what my library classes them as, since that's where I get most of my books from. I often don't agree with their genres though. The fiction books are organised by genre, not by author, so I look in both thrillers and crime (what they library classes as these genres). I seem to prefer mostly European thrillers/detectives, a lot of British, and getting into Scandinavian writers now. I used to watch a lot of American crime shows on TV, so for me it's not linked to that. There don't seem to be as many on TV here now. As for local writers, there aren't very many that I've seen in NZ, at least not at my library. I have read a few books in other genres from NZ authors, some I liked and some I didn't.