Hello all, I'm very much a newbie to Home theatre. I'm planning on upgrading the equipment my parents had because they're getting pretty old. However, they have a pair of front speakers (Tannoy Sixes 609) and a pair of rear speakers (Tannoy too, but unsure of the model) that I wish to keep. The question is, I'm planning to get 5.1 so I'm getting a Centre speaker and also a subwoofer. The Polk CSi3 is something I'm considering. What do you all think? Is it a good centre speaker and will it match my old Tannoy speakers? Much Thanks!