Next up will be a tube preamp, probably a McIntosh but I'm still researching and recovering from the cost of the newly added B&W 800Ds. I'm also exploring the ModWright Transport (tube converted logitech transport) because of the stellar reviews I've read. At some time I'll probably consider new speaker cables as well. But I'm thrilled with the system I've assembled so far. The music is astonishingly good and will only get better as the new speakers accumulate more hours of break-in time. To be sure there are few areas more subjective than high-end stereo gear but to my tastes this is approaching my ideal system.