I have $700 to spend on speakers alone for my home theater room in my new house. Any suggestions so I can get the most "oomph" for the buck? Thanks! ~ Oh yea, I need a 5.1 speaker arrangement! ~ Oops, one more thing! The room is a perfect rectangle measuring 13'x12'. The TV will be centered on a 12' wall and the couch across from it against the wall centered up. I need the right mix of sound to fill the space, but not overpower the room. Thanks!