Quote Originally Posted by Sir Terrence the Terrible
I use PLIIx on all two channel sources except some music. It does a better job of forming a sound bubble around you, much better than Neo:6. DPLIIx adds the sixth and seventh matrixed channels to the 5.1 it already generates. It's matrix and steering are much more advanced than Neo:6, so it can place images in between channels - something Neo:6 just can't do. So you get 7 matrixed channels, and 7 points in between them to steer signals. This makes for more coherent sound staging when used with two channel sources.

Sir TT, have you played with Logic 7 modes? Looking through their literature back in the day, they have massive amounts of papers on the subject about how it came to life. Not sure how relevant this is today, but when i compare all the modes (except Circle) on my 7.1 setup I prefer Logic 7 as it seems more natural...smoother and front heavy with ambiance.