Sunfire subs are more about wow factor. "Ooh, the woofer moves a lot!" That is about all it does. I owned one and it does not represent a good value IMO even at half price. They are small, but the bass is to sloppy. The Sunfire subs are extremely difficult to place and have uneven responce. It could be just me, but I don't think they are very good. Lastly, they hum all the time!!
I would go with an SVS or HSU. I had an HSU STF-2 and it blew the Sunfire truesub away, albeit the HSU will be bigger it still sounds much better.
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