While I am finding this discussion very interesting, and useful in the abstract, my choice is limited to Kagu in that I listen to my music with Bluetooth stereo headphones, which the other media players don't for now permit. For the present Kagu is additionally my choice in that it has so many useful features as well as a team of dedicated developers behind it. However, many of those features are annoyingly imperfect, a situation which I trust will gradually be remedied over time. Yet, as generally pleased as I am with Kagu, if the new N800 firmware update incorporates, or can easily be made to accommodate, the use of Bluetooth stereo headphones for other media players, I may reluctantly have to rethink my choice.