I just listened to the def tech supercube, 3 different klipsch's, an infinity, a kef and the sunfire. I think the Sunfire True Subwoofer Signature is the way im going to go. It sounded the cleanest and it really gets down. I also couldnt really get any distortion out of it. At least at volumes I would listen to it at. Plus I get 60% off retail on it. So I think thats the way Im going to go.