I currently have monitor audio bx as my 5.1 setup, bx5 L/R, BXFX as rears and bx centre. I was thinking of changing the centre out for the silver series, it's on sale at the moment for £159. To my understanding the centre channel mainly deals with vocals on movies, and surely this is an upgrade over the bx I'm currently running , but I also read about the importance of matching L/R centre for the front sound stage. Would I be better staying as I am with the complete bx series, or change the centre out? Any advice would be great.thanks SIM12.