I think the room and setup has as much to do with how the system sounds playing PLII as anything else. I am not getting anywhere near as nice a sound field as I did during the demo at Axiom.
I suspect that at least part of it is because my room is so reflective.
I suspect a lot of people form opinions based on systems that are not set up for optimal performance.
In my case, using a Dire Straits live cd, I noticed a huge difference between two channel and matrixed when demoing at Axiom. At home, with the same speaker set, that difference is mostly gone.