For a while now I have had a regular 2 speaker setup. I am wanting to go surround by adding on to what I currently have. I am not really sure what would match up with what I have. Currently: Kenwood VR-309 Paradigm Monitor 7's I am looking to add 2 rear a center and possibly a subwoofer. I would like to keep this somewhat inexpensive since I dint watch too many movies to justify spending a lot of money. Any advice would be appreciated.