ok, let us simplify what i need.... their difference in AUDIO QUALITY... what is best for you?
I'll try to make an inference based on data and on the assumtion that you would use the NMT for you know what.
A typical AC3 5.1 ch audio encode has a bitrate of 640 Kb/sec
A typical DTS 5.1 ch audio encode has a bitrate of 1.5Mb/sec
Dolby True HD has maximum bitrate of 18Mb/sec but in practice is usually around 5Mb/sec
On face value, I think the bitrate figures should speak for themselves, BUT, do you recall the findings at Streetsmart's shoot-out? AND, how much will Dolby True HD be better in terms of dialogue.
However, you must be aware already that there are those files in the 30-45GB range that has the Dolby True HD audio stream in it. Hence, if your NMT can decode Dolby True HD or at least pass-it through to a Dolby True HD capable AVR, then potentially, the performance level in terms of SQ can even out.
However again, 30-45GB files anyone???
Question: Does NMT play FLAC?