Thanks for all the responses, I'll take a closer look at the onyx, athena, and venturi speakers. Honey said I wasn't suppose to buy any more speakers, but oh well, it is a necessity. Not sure if I'm willing to go much beyond my budget as this is my second audio system for my crappy 32" nonHD TV. My other system is the klipsch reference series and I love those, but I want a more powerful receiver, thus upgrading the Denon.
Also, I'm planning on having carpet laid in this room. Any thoughts on running the flat speaker wire in the room under the pad and carpet? It would be too hard to run them through the walls and ceiling, so I was wondering if I could do it.