I am in the market for new speakers, and I am highly considering Paradigm monitor 9 or 11's. My question is, I am interested in maybe purchasing a center channel from the reference lineup..most likely the CC-470,but maybe the CC-570. How will this affect my setup? Will this throw everything off balance? I have read alot of people saying to stay within the same lineup and company..but would bumping the center to the higher lineup be that big of an issue? Any help would be great thanks!