I am very interested but don't know what 'version' is right for me.

Currently I have a Lexicon RT-10 universal player for DVD, CD, SACD, DVD-A connected to a Meridian G68XXV via one coaxial S\PDIF and eight RCA analog audio connections. Video out put is by component cable to a Fujitsu LPF-QSD1 outboard scaler. I had selected the RT-10 because of its superb audio performance with all formats.

In addition I use a PS3 for DVD, Bluray and wireless music streaming from my PC. The PS3 is connected by Toslink with the G68XXV for 5.1 audio and by HDMI with the scaler for video.

I have ordered a Meridian HD621 to be able to run "lossless" TrueHD and DTS-HD 7.1 channel audio formats into the Meridian G68 processor.

How does the BDP-83HCT fit in here? It probably replaces the RT-10 and the PS3 and reduced the cables to a single HDMI cable for all signals streams to the Meridian HD621. There the audio and video signals are separated and forwarded by BNC Meridian Comms to the G68 (audio only) and by HDMI to the scaler (video only).

How do the 4x S\PDIF digital outputs of the "Meridian Ed." fit in? Can they be used to "bypass" or even make the HD621 unnecessary?

G68XXV, Oppo BDP83, Forsell CD, Audio Syn DAX-2, LG LSS-3200A TV box, Krell amps, Apogee Diva(M) & Duetta(R), Dunlavy HRCC(C), Audio Physics Virgo(S), Velodyne DD-15 sub, Transparent cables, Fujitsu LPF-D711 projec, Draper 10'screen.