Keep the N802's. The 803 lacks the sophisticated bass cabinet and midrange enclosure of the 802. The diamond tweeter may be an improvement but the remainder of the speaker would be a big step down. Remember that most of the music lies in the midrange.
Maybe try another flavor of amp instead. Have you tried spiking the 802's? That changes the character quite a bit as well.
Maybe try another flavor of amp instead. Have you tried spiking the 802's? That changes the character quite a bit as well.