You don't specify films or music, or both.

For 2-channel sources, you should use SPDIF and make sure your G68J has the latest "apodizing" firmware.

For films you should be looking at the HD621, because it allows the following:

- From Bluray, lossless sound, upsampled, into your G68J. (Down the SPDIF cable you are only getting vanilla (lossy) DD/DTS, albeit at a much higher bitrate than with DVD.)

- From DVD, upsampled vanilla DD/DTS already decoded by the Oppo (which you will have to configure correctly so that it decodes).

Of course your ears have to decide in the end.

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