I use Quad L-ite Centre with SFH PX cable, I personally think it performs well under gun fire/ vocal.
I tested with films such as Avatar Chapter 30, Pirates of Carribean 3; also OK with XBox Call of Duty etc. type of games.
[Although I don't have Quad L-ite Satellite bookshelf speakers, I know that Centre speaker (and subwoofer, but that's different topic) is of much higher importance for AV amp watching movie.]