I have owned both speakers for over a year before I moved on to a pair of WATT/puppy 5.1's. The 803's offer a significant improvement over the 804's in terms of bass response, depth, and soundstage. My listening room is fairly large -- 18'x22' -- and warrants the bigger sound of the 803's. Aside from cost, the only reason to consider the 804's is if they are being placed in a relatively small listening area where a small footprint is desired. Nonetheless, it was the 803's, NOT the 804's, that ultimately drew me back to the excitement of high-end audio.
