These may sound stupid but I have a few questions about my Yammie HTR-5790.

What is the difference between Surround Standard and Surround Enhanced? Is the Enhanced part just adding the rear surrounds?

I am running a 7.1 setup, BTW.

Also, is there a difference in Surround Enhanced and PLIIx? I know the PLIIx is a 7.1 soundfield but I notice the sound to be a little better with the Surround Enhanced.

Is it possible to get the DTS Neo 6 or even the DTS ES Matrix to run from my DirecTV? I can't seem to get the DTS soundfield up with the DirecTV. It only switches between Surround Standard and Enhanced and PLIIx.

Some help would be appreciated.