The RX-V3900 is very nice, but so is the 863... if it were me, and I could afford it I would go with the 3900. It has an extra HDMI input, as well as a nicer amp section, and a graphical OSD, and network capabilites, plus in my opinion it looks a lot nicer. But you may be better served my the RX-V1900 unless you really want networking capabilites.