You know what, I measured a bit wrong. I forgot to include the small dining room which is attached so that would make the open area more like 12x24x8.5 feet. I'd prefer something compact like the SB3000 but do I need to be looking at something more like the PB2000 Pro? The issue is with the wider subwoofers it really makes it hard to fit the front bookshelf speakers and everything else around it easily.
I'd normally go for ported but it is so hard to fit.