DTS Neural:X vs DSU?

[ratbuddy]

Has anyone done a comparison of ToME audio played through the competing multichannel upmixing technologies? It sounds good with DSU (7.1.4 system, ToME outputting 5.1 PCM through HDMI) but the tops aren't really evident. Just trying Neural:X now, and my initial impression is that it's adding too much, but I've only had it on for a few minutes. Can't really hear the tops either, except the mains appear to have been raised off the floor a bit, with the main menu theme song appearing to emanate from about 2 feet above the main speakers - maybe that's the only effect of Neural:X..

Thoughts?