Which one would you get and why?
For reference, my room has a cathedral ceiling and open to an upstairs landing. I estimate the volume at 5500^3. Action movies are usually played at -7 to-5, more sedate flicks at -3 to 0. All my speakers are calibrated to 75db using my processor's test tones and a Radio Shack SPL meter; no room correction software. My current sub placement, and my preferred spot due to room setup, is in the corner behind the left front speaker.
PS - Other suggestions welcome. Budget tops out about $1500.