They are the absolute bollocks, I love them. Very uncommon to see them around which makes them even more nicer to see when you do see one. Especially with the Nismo or Veilside bodykit I think they are the nuts. And one of the nicest 6 cylinder rasps as well.

http://youtube.com/watch?v=66FXqaLtcsk&feature=related

http://youtube.com/watch?v=RClUEQg7Gjo

just a couple so you get the idea

Never driven one or know any cons they might have though.