Bruno, I agree with Chris about Dolby vs Neo:6. At first Neo:6 can sound interesting but after listening for a while Dolby clearly sounds more natural. Like Chris I also use PLIIx on DTS tracks now.
The only parameter I can set on my receiver for Neo:6 is the center width. However, for Dolby I can set the center width, panorama (blends mains more into the surrounds) and dimension (moves soundstage forward or backwards). But AFAIK these all only work with 2.0 sources.
I’m not sure if your Denon has a setting similar to my Onkyo but when I’m up and moving around I switch to just my front 3 speakers + subwoofer. It basically gives me whole house audio (well whole neighborhood if I turn it up) by running my 3 M80s and sub.
