Az- There is a thread on HTF now with your concern as far as the Pioneers go. No phantom center. If you disable it in the player, you lose it. There was at least one other player mentioned that did the same thing.
Charlie- I don't remember a feature like that. You can choose from the DVD-V or DVD-A parts from the menu on your display though (not the player's display, your main (TV) display).
If it's not worth waiting until the last minute to do, then it's not worth doing.
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