Danz, the Nautilus 805s are much better, then the Matrix 805 speakers. The Nautilus sound more articulate and sweeter. I'm using the Nautilus 805 speakers with the Velodyne ULD 15 sub. This combo sounds awesome. The best speakers BW Makes, is the Nautilus 801, Nautilus 802 and the Nautilus 805 with a good sub. The Nautilus 805 with a good sub, will blow away the Nautilus 803 and 804.