I watched some scenes from several Atmos movies yesterday. While the SVS Elevations used as front heights did add some sense of overhead sound, what was more noticeable was how much more open and immersive it was. At the suggestion of some folks here on AVS, I set the Elevations to run 4.5/5 dbs hotter than Audessey had set them. That resulted in a significant improvement in how they sounded. The first 20 minutes of Saving Private Ryan, with it's brutal Omaha Beach landing sequence, was very impressive with battle sounds coming from all directions. The last movie that I looked at was Silverado with its brilliant music score. It has a Dolby TrueHD 5.1 soundtrack which DSU took out to my 5.1.2 system. When a full orchestral part of the score played in a scene it was pretty startling. The music completely filled my living room and was very dynamic. It was terrific. I would consider getting another pair of Elevations to use as rear heights but my couch is close to the back wall so how feasible that would be I'm not sure. By all accounts a 5.1.4 system with Elevations is supposed to be outstanding. I'll probably call the SVS guys and ask them about it.