quote:
I don't mind paying more if it's worth it. But I'm not a fan of paying a premium to get gold plating, features going unused, or more than I really need.
(You don't buy a stretch limo when an SUV will work just fine. But I buy napa wine over boones farm.)

Neither of these companies deal in "snake oil" so the only thing you pay more for is performance.

The thing is you have a very big space so from my POV bigger is better BUT I don't know how loud you listen to movies and how much power you want.

If you just ask me I would pick the V1801 from your list, it has much more mid-bass and really excels in the chest slam range.

However...

Given the fact you don't want to overspend on a F350 when a F150 would do the job I might suggest going the SVS route and getting a smaller sub, say the PB1000 or 2000. Why? Because although both companies give in-home trials SVS will pay the return shipping. So pick up one of the smaller SVS subs try it out in the 45 day period and if you don't think it is enough ship it back and get a larger one. You may find you are perfectly happy with a much less powerful sub, especially having been living without one. This is the lowest risk approach to ensure you get what you want but don't overspend. The Ultra 13 and 1801 are likely to be the most powerful home subs you have come in contact with and even the small ones are more powerful than the VAST majority of people own.

Building extreme sub woofer systems is a hobby of mine so I am somewhat jaded BUT I have set several systems up for friends and family with 700-800 dollar PSA and SVS subs over the years and even in big rooms "holy shite" is usually the response. It is easy for people who are deep in a hobby to sucked people into going down the rabbit hole, so I guess in the end I would say go smaller with SVS and upgrade if you feel like you want more, it is a rather painless approach.