Have been lurking and reading here as I'm putting together a new HT in my basement. I am looking at the Yamaha FP9500 6.1 package as I can get a new set for about $200. My problem is I have a Sony 897 7.1 receiver, so I'll be one speaker short. Getting to the point, if I buy these speakers, would I be better off getting a different center channel or trying to find a single matching speaker with this set? Surely somebody bought this 6.1 set and only has a 5.1 system so they have an unused speaker to sell. If my best option is buying a non-matching center channel, would anyone care to suggest one that would blend with the Yamahas?