[alexadams77]

As mentioned above, post what your budget is. Also, take what is posted here over the next week or so and then call SVS for yourself. They have incredible customer service and don't try to sell you something that you don't need.

My HT room is a bit smaller then yours and very open as well. Everyone on the forms told me to buy the most expensive SVS that I could afford. When I called SVS, they told me to get a PB12-NSD and that would do well in my room. After seeing a lot of feed back from different subs, I ended up getting a PC13-U. Now that I have it, I don't think that I would've settled for anything less. This thing is a beast and shakes pictures that are on the other side of the house in bedrooms!

You could also post what city you live in and see if anyone is willing to give you a demo of their sub for you.

In a room as big as yours, I would get at least a PB12-Plus if not the PB12-Plus/2. If you really want to hear what DVD and music has to offer, go for the PB/PC13-Ultra, you will not be disappointed.