After reading through this thread and a few other reviews, I ordered the Dayton Sub 1000. Gotta say, it makes my Pioneer SW8 look like a pansy. Larger enclosure (Expected with the larger driver), but also the quality just seems to be on a different level. It's heavy, the enclosure looks very nice, and I'm very impressed with the driver itself. In the $100 price range, I never expected to get a driver anywhere near this nice.
Not a huge difference in sound quality between the two, but I prefer the Sub 1000 in the music department and they're both about even with movies so far. Really need to get some more time with it to be able to say for sure. However, the Dayton definitely wins in the output department.
I realize this probably isn't useful information at all, but just wanted to post. The Dayton is very impressive for how cheap it is.