It is the DTS equivalent to ProLogic II.
I don't like it too much (at least for classical music); I always feel it is "too central" for my taste, but I am glad my receiver can do it. I found myself in the past few weeks changing settings and algo once in a while (including using Neo:6!).

They all have a diffent feel, which means that, when changing and re-configuring, you end up experiencing different "rooms". It is quite nice. I have thus stopped finding the "perfect surround settings" for me and have rather started to enjoy changing (they are all good, it is just a matter of taste). I also have Neural-THX.

See Mojo's signature