Originally Posted by samp81
This was the most valuable part of your response. I have received recommendations for a Subs in other post for Epic, SVS, and other subwoofers in the $500 range. The one thing I had not heard was why those subs other than "they perform great.". Getting something that is best for my space/setup is more important to me than price.
If you spend enough time here you'll find a distinct bias towards certain brands. A lot of the reason is warranted, because some of the companies in question do represent a true value, but often times it misleads people who don't have a depth of experience into thinking those are the only options (especially when they're presented as such). There's also a few with a headstrong opinion regarding what constitutes acceptable; for them it means the ability to rattle fillings from your mouth, and anything less is unacceptable. Deep, rich bass is definitely addictive -- a disease a lot of us suffer from, myself included -- but eating has has a certain significance too.
Not everyone's financial situation permits that type of purchase, which is precisely why I started the "budget" series of threads. There are those who simply can't afford something elaborate and all encompassing, and I fully understand that perspective. It was an unfilled need, so I decided to try and rectify that.
Getting back to your specific situation... you have competing circumstances; a room on the larger side, but a budget on the smaller side. That combination will generally result in a purchase that doesn't really provide the output or extension you'll need. A big space requires output (volume), and to properly render all the sound effects you need extension (depth) as well. The bigger the space the more of both you'll need. Buy something too small and the room will overwhelm it, essentially making what you did spend a waste of money.
Brands like Epik, SVS, Hsu, Rythmik, et al have products that not only can play loud, they can play deep. But they don't fit in everyone's budget. Other companies -- like Cadence and Premier Acoustics -- make subwoofers that can play just as loud, or in some cases louder, but they don't go as deep. They also don't cost as much either.
There are options available to fit nearly anyone's situation, but personal expectations have to be managed if the budget is not commensurate with the needs; in essence, something has to given. You do have a few different options to choose from though, so your back is not against the wall. I would only caution you against getting something too small. In that case the probability of being happy with your purchase is very slim.