I have the Dread II and is profiled here, but I have also heard great things about the Dread I. One of the differences might be power? Now you can 5 X 225 or 2 channel it will paly more like 250 as the 2 will draw from the 3 not in use.
Movies are scintillating, you hear every detail. Audio 2 channel I would agree with everything already discussed. My system is now very revealing with background details more soild and present.
Good luck on your search. I had called Craig Shumer about the Parasound, he talked me into Theta II, and I thank him!
Duratek